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Neet Biology Morphology Of Flowering Plants Mcq
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Q.1
Identify the wrong statement .. .. [ EAMCET 2005]
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a) A plant that bears male, female and bisexual flowers is polygamous
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b) Actinomorphic flower can be dissected into two equal halves from any plane
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c) Superior ovary is found in hypogynous flowers
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d) Side of the flower towards the bract is called posterior side
Explanation
When the flowers are borne laterally upon it, the side of the flower towards the mother axis (or precisely towards the apex of mother axis) is known as the posterior side while the side away from it (the side of the flower towards the bract when it is present) is called as the anterior side. Answer : (d)
Q.2
Floral formula of Brassicaceae ( Mustard) is ... ... [ CPMT 1991]
0%
a)
0%
b)
0%
c)
0%
d)
Explanation
The flowers are usually perfect. Actinomorphic (radial symmetry), bisexual. There are 4 sepals, 4 petals, 6 stamens that are tetradynamous, and a syncarpous gynoecium of 2 carpels. Answer : (a)
Q.3
Plant which flowers only once are ... ..[ CPMT 1993]
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a) Pericarpic
0%
b) Monocarpic
0%
c) Polycarpic
0%
d) Cleistocarpic
Explanation
Century plant, or Agave americana, is monocarpic, meaning it blooms once in its lifetime. Answer : (b)
Q.4
Fruit of Calotropis is ... ..[ Pb.PMT 2000 ]
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a) Nut
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b) Follicle
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c) Berry
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d) Siliqua
Explanation
Fruit of Calotropis a follicle is a dry unilocular fruit formed from one carpel, containing two or more seeds. Answer : (b)
Q.5
Which is active in maize? ... .. [ CPMT 1996]
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a) Maltase
0%
b) Zymase
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c) Diastase
0%
d) Urease
Explanation
Answer : (c)
Q.6
In Groundnut/Peanut the fruit is ... ... [ CPMT 1996]
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a) Geocarpic
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b) Amphicarpic
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c) Photocarpic
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d) Pericarpic
Explanation
Geocarpic plants bend their stems so that the fruit can be embedded in the soil during the freezing process while the fruit is still attached to the plant itself. Example Groundnut/Peanut Answer : (a)
Q.7
Root cap is absent in ... ... [ BHU 2000 ]
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a) Hydrophytes
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b) Lithophytes
0%
c) Xerophytes
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d) Mesophytes
Explanation
The root cap protects the growing tip of roots from soil and hard rock surface. As hydrophytes are generally aquatic plants, no such protection is needed for their roots. In hydrophytes, roots are either absent or poorly developed Answer : (a)
Q.8
Gynoecium having three fused carpels with a single ovule containing chamber is ... ... [ JIPMER 2004]
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a) Tricarpellary, syncarpous, unilocular
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b) Tricarpellary, polycarpellary, unilocular
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c) tricarpellary, syncarpous, trilocular
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d) Tricarpellary, polycarpellary, trilocular
Explanation
Gynoecium having three carpels which are known as called tricarpellary. In a syncarpous gynoecium, the "fused" ovaries of the constituent carpels may be referred to collectively as a single compound ovary. unilocular is having, consisting of, or characterized by only one loculus or cavity; single-chambered. Answer : (a)
Q.9
Select the correct combination of edible part ... ... [ Manipal 2000 ]
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a) Coconut - Mesocarp
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b) Apple - Mesocarp
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c) Mango - Endocarp
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d) Banana - Mesocarp, Endocarp
Explanation
The edible portion of banana is endocarp and less developed mesocarp. In coconut,endosperm is edible paert, endocarp encloses a single seed with brown testa that contains a small embryo and a white oily endosperm (edible part) with watery fluid called coconut water. In apples and pears only the outer hypanthium layer is eaten in mango, The mesocarp is edible part it is nutritious fleshy part, between the skin and the seed Answer : (d)
Q.10
A leaf without petiole is ... ... [ kerala 2001]
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a) Subpetiolate
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b) Sessile
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c) Subsessile
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d) All the above
Explanation
Leaves that do not have a petiole and are directly attached to the plant stem are called sessile leaves. Leaves also have stipules, small green appendages usually found at the base of the petiole Answer : (b)
Q.11
Lomentum is ... ... [ BHU 2007]
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a) Achenial fruit
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b) Schizocarpic fruit
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c) Composite fruit
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d) Syconus fruit
Explanation
Schizocarpic fruits are of following 5 types: Lomentum: The fruit is constricted between the seeds and usually breaks up into segments containing one or more seeds, e.g. Mimosa, Acacia arabica. Compound Samara, Cremocarp, Carcerulas, Regma Answer : (b)
Q.12
Ligulate corolla found in compositae is ... ...[ JIPMER 2000 ]
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a) Wheel-shaped
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b) Strap-shaped
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c) Masked
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d) Two-lipped
Explanation
Strap-shaped: Ligulate; shaped like a strap: used especially of the rays of the tubuliflorous and the corollas of the liguliflorous Composit. Answer : (b)
Q.13
What is wrong about Solanaceae
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a) Swollen axis placentation
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b) Bicarpellary superior ovary
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c) Monocarpellary superior ovary
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d) Epipetalous stamens
Explanation
In Solanaceae, the placenta is swollen and axile placentation is seen. The margins of carpels fuse to form central axis is known as axile placentation. Family Solanaceae possesses pentamerous, actinomorphic, hypogynous, hermaphrodite, complete flowers, bicarpellary, syncarpous, superior, bilocular ovary with axile placentation and oblique septa. Thus option (c) is not correct Answer : (c)
Q.14
Pneumatophores are characteristic features of ... .. [ Bihar PMT 2001]
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a) Hydrilla
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b) Typha
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c) Rhizophora/Sonneratia
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d) Banyan
Explanation
Pneumatophore A specialized root that grows upwards out of the water or mud to reach the air and obtain oxygen for the root systems of trees that live in swampy or tidal habitats. Sonneratia mangroves develop a flat root system, the underground, horizontally growing roots grow away the trunk and develop cone roots in regular intervals which normally reach a height of 40 to 60cm, measured from the soil to the tip of the cone root. Answer : (c)
Q.15
Hesperidium occurs in ... .. [ EAMCET 1999 ]
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a) Orange and Lemon
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b) Pineapple and Guava
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c) Banana and Papaya
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d) Apple and Grapes
Explanation
Citrus fruits are classified as a hesperidium. Hesperidium is a modified berry resulting from a single ovary. The fruit consists of 8–16 carpels that form the core of the fruit or segments that contain the seeds and juice. Answer : (a)
Q.16
Velamen is a tissue found in .. .. [ BHU 1996]
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a) Parasites
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b) All epiphytes
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c) Aerial roots of some orchids/Vanda
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d) Halophytes
Explanation
Velamen or velamen radicum is a spongy, multiple epidermis that covers the roots of some epiphytic or semi-epiphytic plants, such as orchid and Clivia species. Answer : (c)
Q.17
Axile placentation occurs in ... .... [ EAMCET 1991]
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a) Asteraceae and Fabaceae
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b) Brassicaceaeand Solanaceae
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c) Solanaceae and Liliaceae
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d) Brassicaceae and Solanaceae
Explanation
Axile placentation occurs in Solanaceae and Liliaceae Answer : (c)
Q.18
Plants having inferior ovary produce ... .... [ AIIMS 2012]
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a) Berries
0%
b) Pseudocarp
0%
c) Seedless fruits
0%
d) Adventitious roots
Explanation
The plants which have inferior ovaries often lead to involvement of other structures like the thalamus in the formation of the frutis. They are thus called pseudocarps. Answer : (b)
Q.19
The largest leaf belongs to ... .. [ CPMT 1995]
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a) Nerium
0%
b) Tobacco
0%
c) Victoria/ Musa
0%
d) Rafflesia
Explanation
Answer : (c)
Q.20
Oblique ovary is found in ... .... [ DPMT 2002]
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a) Liliaceae
0%
b) Solanaceae
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c) Asteraceae
0%
d) Poaceae
Explanation
Obliquely placed bicarpellary ovary is characteristic of Solanaceae. Answer : (b)
Q.21
A fleshy root tapering at both ends is ... .. [ AMU 2001]
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a) Fusiform
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b) Conical
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c) Napiform
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d) Tuberous
Explanation
A fusiform root is a root that tapers at the top and at the bottom, For example the taproot of a white radish. Answer : (a)
Q.22
A dry indehiscent fruit is ..... ...[ kerala 2004]
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a) Caryopsis
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b) Follicle
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c) Capsule
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d) Pod
Explanation
Indehiscent fruit do not open at maturity in a pre-defined way, but rely on predation or decomposition to release the seeds. Caryopsis is a dry one-seeded fruit in which the ovary wall is united with the seed coat, typical of grasses and cereals. Caryopsis is a indehiscent and a simple dry fruit. Answer : (a)
Q.23
Verticillaster type of inflorescence occurs in ... ... [ JKCMEE 2008]
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a) Cotton
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b) Datura
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c) Leucas
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d) Ocimum
Explanation
Verticillaster is a cluster of sessile or subsessile flowers borne on a dichasial cyme ending in monochasial cyme in the form of condensed whorl on either side of the node. The example is Lamiaceae/Labiatae (salvia). Ocimum (Basil) is a genus of aromatic annual and perennial herbs and shrubs in the family Lamiaceae, Answer : (d)
Q.24
Caryopsis is the fruit of ... .. [ JKCMEE 2011]
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a) Coconut
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b) Brinjal
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c) Tomato
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d) Maize/Sorghum
Explanation
Caryopsis is a dry one-seeded fruit in which the ovary wall is united with the seed coat, typical of grasses and cereals. The caryopsis is popularly called a grain and is the fruit typical of the family Poaceae (or Gramineae), which includes wheat, rice, and corn. Answer : (d)
Q.25
Cladode is ... ...[ Odisha 2012]
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a) One internode long modified stem capable of photosynthesis
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b) A specialised reproductive shoot
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c) Flattened green stem of unlimited growth
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d) A perennial fleshy underground stem
Explanation
Cladode is a flattened leaflike stem. Cladode is a modified stem that makes it behave as a leaf assuming its photosynthetic activity. Answer : (a)
Q.26
Identify the incorrect statements from the following .. ..[ WB 2012] P. Cymose inflorescence is found in Hibiscus Q. Hypanthodium is found in Ficus R. Synandrous stamens are found in Calotropis S. Hesperidium type of fruit is found in Mango
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a) R, S
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b) P, Q
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c) Q, R
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d) P, S
Explanation
Synandrous have stamen fused along both their filaments and anthers. cucurbits like gourd, bitter-gourd Stamens in Calotropis are are free and thus not synandrous. Mango has a drupe kind of fruit as it has a stony endocarp. Thus statement R, S are not correct Answer : (a)
Q.27
Occurrence of different types of leaves in Limnophylla is called ... ...[ JIPMER 2003]
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a) Heterophylly
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b) Pseudophylly
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c) Heterophily
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d) Heterotrophy
Explanation
Answer : (a)
Q.28
Which of the following is associated with dormancy of seeds? ... .. [ DPMT 1997]
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a) IBA
0%
b) GA
0%
c) Ethylene
0%
d) Ferulic acid
Explanation
In certain seeds, the dormancy of the seeds is due to the presence of certain germination inhibitors like coumarin, ferulic acid, abscisic acid, etc. These may be present in endosperm, embryo, testa or juice or pulp of fruit. Answer : (d)
Q.29
Insectivorous plants usually grow in soil which are deficient in ... .. [ AFMC 2003]
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a) Nitrogen/nitrate
0%
b) Water
0%
c) Organic matter
0%
d) Ca/Mg
Explanation
Answer : (a)
Q.30
A typical flower with superior ovary and other floral parts inferior is ... ..[ JKCET 2005]
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a) Polygamous
0%
b) Hypogynous
0%
c) Perigynous
0%
d) Epigynous
Explanation
Hypogynous having the stamens and other floral parts situated below the carpels or gynoecium. In hypogynous flowers, the perianth and stamens are attached to the receptacle below the gynoecium; the ovary is superior to these organs, and the remaining floral organs arise from below the point of origin of the carpel. Answer : (b)
Q.31
Which one is a composite fruit ... ...[ DPMT 2002]
0%
a) Pea
0%
b) Strawberry
0%
c) Calotropis
0%
d) Jack fruit
Explanation
Composite fruits are those fruits which develop from the entire inflorescence rather than from single flower. There are two types of composite fruits namely syconus and sorosis. Syconus is a collective fleshy fruit in which the ovaries are hidden within a receptacle e.g. fig. Sorosis develops from spike or spadix inflorescence. Sorosis is seen in Artocarpus (jack fruit), Ananas (pineapple) and Morus (mulberry). Answer : (d)
Q.32
Root cap does not occur in ... ... [ Odisha 2004]
0%
a) Ipomoea
0%
b) Mangrove plants
0%
c) Pandanus
0%
d) Pistia
Explanation
The root cap is absent in some parasitic plants and some aquatic plants ,Pistia is aquatic plant, Answer : (d)
Q.33
Which is correct ... .. [ CBSE 2011]
0%
a) Placentation in Primrose is basal
0%
b) Flower is modified shoot
0%
c) Tomato fruit is capsule
0%
d) Orchid seeds have oil rich endosperm
Explanation
Free central placentation, the ovules develop on the central axis while the septa are absent. This type of placentation is found in Dianthus and primrose. Option (a) is not correct statement. The flower is generally defined as a highly specialized reproductive shoot, comparable to leaves- bearing shoot. Option (b) is correct statement. Tomatoes, peppers and cucumber are berry but not strawberries! Option (c) is not correct statement. Answer : (b)
Q.34
Botanical name of Jowar and Rice are respectively ... ... [ JIPMER 2004]
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a) Oryza sativa and Pennisetum typhoides
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b) Sorghum vulgare and Oryza sativa
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c) Triticum aestivum and Pennisetum typhoides
0%
d) Oryza sativa and Sorghum vulgare
Explanation
Answer : (b)
Q.35
Largest bud is of ... ... [ kCET 1991]
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a) Cabbage
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b) Cauliflower
0%
c) Agave
0%
d) Onion
Explanation
The head of cabbage is the largest terminal (apical) bud which occurs at the end of a stem. Answer : (a)
Q.36
Ovary is half-inferior in the flowers of ... ... [ CBSE 2010]
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a) Plum/Peach
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b) Brinjal
0%
c) Cucumber
0%
d) Guava
Explanation
If gynoecium is situated in the centre and other parts of the flowers are located on the rim of the thalamus almost at the same level, it is called perigynous. The ovary here is said to be half inferior, i.e, plum rose, peach, etc. Answer : (a)
Q.37
Pappus occurs in compositae for ... ... [ CPMT 2007]
0%
a) Air pollination
0%
b) Air dispersal
0%
c) insect pollination
0%
d) Animal dispersal
Explanation
In some species, such as Dandelion or Eupatorium, feathery bristles of the pappus function as a parachute which enables the seed to be carried by the wind. So, pappus is present in Compositae for air dispersion. Answer : (b)
Q.38
Biggest flower belongs to a plant which is ... ..[ CBSE 1999]
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a) Partial stem parasite
0%
b) Partial root parasite
0%
c) Total stem parasite
0%
d) Total root parasite
Explanation
The flower with the world's largest bloom is the Rafflesia arnoldii. This rare flower is found in the rainforests of Indonesia. It can grow to be 3 feet across and weigh up to 6.8kg. It is a parasitic plant, with no visible leaves, roots, or stem. Answer : (d)
Q.39
Non-endospermic seeds are found in ... ... [ Odisha 2010]
0%
a) Barley
0%
b) Castor
0%
c) Bean
0%
d) Wheat
Explanation
Cotyledon seeds or non-endospermic seeds are those which seed endosperm is absorbed by cotyledons and hence cotyledons are swollen, ex: bean seed. Answer : (c)
Q.40
Pollinia occur in ... ...[ Odisha 2009]
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a) Cruciferae
0%
b) Asteraceae
0%
c) Poaceae
0%
d) Asclepiadaceae
Explanation
Answer : (d)
Q.41
Epipetalous is condition of ... .. [ CPMT 1991]
0%
a) Placentation
0%
b) Stamens
0%
c) Position of oveary
0%
d) Aestivation of petals
Explanation
Answer : (b)
Q.42
A perennial plant differs from biennial in ... .. [ CBSE 1994]
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a) Having underground perennating structure
0%
b) Having asexual reproductive structures
0%
c) Being tree species
0%
d) Not dying after seasonal production of flowers
Explanation
Biennial plants have a life cycle of two years so they germinate and grow one year, bloom and die the following. Everything which lasts longer than two years is Perennial, which in practical terms usually means it grows and flowers for many years Answer : (d)
Q.43
Cicer arietinum is ... ... [ MPPMT 2001]
0%
a) Bengal Gram
0%
b) Black gram
0%
c) Green gram
0%
d) dew Gram
Explanation
Cicer arietinum (chickpea or chick pea) is an annual legume of the family Fabaceae, subfamily Faboideae. Its different types are variously known as gram or Bengal gram, garbanzo or garbanzo bean, Egyptian pea. Answer : (a)
Q.44
Corm is ... .. [ CT Chd. 2006]
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a) Horizontal underground stem
0%
b) Unbranched compressed spherical vertical underground stem
0%
c) Horizontal above ground stem
0%
d) Spherical above ground branched stem
Explanation
corm is a rounded underground storage organ present in plants such as crocuses, gladioli, and cyclamens, consisting of a swollen stem base covered with scale leaves. Answer : (b)
Q.45
Drupes are called stony fruit as they have ... .. [ kerala 2005]
0%
a) Hard endocarp
0%
b) Hard mesocarp
0%
c) Hard epicarp
0%
d) Hard epicarp and hard mesocarp
Explanation
A drupe—the botanical name for stone fruit—is a fruit in which an outer fleshy part (exocarp, or skin; and mesocarp, or flesh) surrounds a shell (called the pit, stone, or pyrene) of a hardened endocarp with a seed (kernel) inside. Answer : (a)
Q.46
Scorpioid cyme occurs in ... ..[ JKCMEE 2007]
0%
a) Hamelia
0%
b) Nerium
0%
c) Heliotropium
0%
d) Clerodendrum
Explanation
Scorpioid cyme, a cyme in which the axis is curved and the flowers arise two-ranked and on alternate sides of the axis Answer : (c)
Q.47
A plant with photosynthetic roots is ... ... [ BHU 2012]
0%
a) Trapa
0%
b) Dahlia
0%
c) Momordica
0%
d) Mirabilis
Explanation
Trapa bispinosa plant often develops a large scale root system in natural waters. The roots are green colored with chlorophyll and capable of photosynthesis using light energy coming through the water. Answer : (a)
Q.48
Germination of seed within fruit is ... ... [ BHU 1992]
0%
a) Ovipary
0%
b) Vivipary
0%
c) Hypogeal
0%
d) Epigeal
Explanation
Vivipary means the seed germinates while it is still attached to the mother plant. Plants such as some Iridaceae and Agavoideae grow cormlets in the axils of their inflorescences. These fall and in favourable circumstances they have effectively a whole season's start over fallen seeds. Answer : (b)
Q.49
Thick roots hanging down from Banyan tree are ... .. [ BH 1995]
0%
a) Stilt roots
0%
b) Prop roots
0%
c) Pneumatophores
0%
d) Buttress roots
Explanation
Prop roots – These roots develop from the branches of the tree, hang downwards, and penetrate into the ground thereby supporting the tree. Examples: Roots of the banyan tree and Rubber plant. Thimmamma marrimanu in Ananthapur, Andhra Pradesh, spread over five acres and famous as the largest banyan tree in the world Answer : (b)
Q.50
Which one is the largest root parasite? ... .. [ CPMT 1998]
0%
a) Rafflesia
0%
b) Monotropa
0%
c) Arceuthobium
0%
d) All the above
Explanation
Answer : (a)
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