Q.1
According to which branch of biology, population is a group of individuals of a species which interbreed and remain isolated from other such population .... .... [Guj.C.E.T.2010]
  • a) Genetics
  • b) Embryology
  • c) Ecology
  • d) Environmental biology
Q.2
Organisms living at the bottom of a lake is .... .... [M.P.P.M.T.2000]
  • a) Nekton
  • b) Benthos
  • c) Plankton
  • d) Pelagic
Q.3
Natality is .... .... [Kerala 2006]
  • a) Total number of individuals present for unit area at a given time
  • b) Increase in number of individuals in a population under a given environmental conditions
  • c) Loss of individuals due to death in a population under given environmental conditions
  • d) Movement of individuals into and out of population
Q.4
Proportion of young individuals is highest in case of .... .... [C.P.M.T. 1992]
  • a) Declining population
  • b) Stable population
  • c) Both A and B
  • d) Expanding population
Q.5
A progressive series of changes in plant and animal life in an area from initial colonisation is called .... .... [A.M.U.2009]
  • a) Evolution
  • b) Succession
  • c) Selection
  • d) Specialisation
Q.6
Sunken stomata occur in .... .... [Odisha 2006]
  • a) Xerophytes
  • b) Hydrophytes
  • c) Mesophytes
  • d) Opsanophytes
Q.7
Most important parameter for determining population growth is .... .... [C.E.T.Chd 2011]
  • a) Population size
  • b) Natality
  • c) Vital index
  • d) Population growth curves
Q.8
Association between barnacles and whale/limulus is .... .... [Kerala 2010]
  • a) Symbiosis
  • b) Commensalism
  • c) Parasitism
  • d) Predatorship
Q.9
Match the columns and find the correct combination .... .... [E.A.M.C.E.T.2009]
a. Spongy aril Jussiaea
b. Multiple epidermis Pistia
c. Respiratory roots Nerium
d. Root pockets Sagittaria
- -   - - Nymphaea
  • a) a - 1,b - 3, c - 2, d - 5
  • b) a - 2,b - 1, c- 4, d - 3
  • c) a - 5, b - 3, c - 1, d -2
  • d) a - 4, b - 2, c - 3, d – 1
Q.10
Hyperparasite is parasite which .... .... [Manipal 1998]
  • a) Kills its host
  • b) Completes life cycle in one host
  • c) Uses host machinery for reproduction
  • d) None of above
Q.11
"Complete competitors cannot coexist" is true for .... .... [D.P.M.T.2011]
  • a) Primary succession
  • b) Secondary succession
  • c) Character displacement
  • d) Competitive exclusion
Q.12
Soil particles determine its .... .... [C.B.S.E.1992]
  • a) Texture
  • b) Field capacity
  • c) Water holding capacity
  • d) Soil flora
Q.13
Match the columns and find the correct options .... .... [Kerala 2011]
a. Pacific salmon p. verhulst - pearl logistic growth
b. N1 = N0ert q. breeds only once in life time
c. oyster r. exponential growth
d. dN/dt = rN s. large number of mall size offspring
  • a) a - s, b - r, c - p, d - q
  • b) a - r, b - s, c - p, d - q
  • c) a - r, b - p, c - s, d - q
  • d) a - q, b - r, c - s, d - p
Q.14
Animals that can tolerate a narrow ranges of salinity are .... .... [A.M.U.2012 ]
  • a) Stenohaline
  • b) Euryhaline
  • c) Anadromous
  • d) Catadromous
Q.15
A keystone species is the one which has .... .... [B.H.U. 2008]
  • a) A small proportion of total biomass but has a huge impact on community's organisation and survival
  • b) A rare species with little impact on biomass and other species in the community
  • c) A plenty of biomass but low impact on community's organisation
  • d) A dominant species which has a large proportion of biomass and which affects many other species
Q.16
An association of individual of different species living in the same habitat and having functional interaction is .... .... [A.M.U.2002]
  • a) Population
  • b) Ecological niche
  • c) Biotic community
  • d) Ecosystem
Q.17
Root system is poorly developed in .... .... [Guj.C.E.T. 2006]
  • a) Hyphaene
  • b) Hydrilla
  • c) Halophytes
  • d) Hygrophytes
Q.18
Hydrilla is .... .... [Odisha 2012]
  • a) Phytoplankton
  • b) Floating hydrophyte
  • c) Submerged hydrophyte
  • d) Amphibian
Q.19
Ozone layer occurs in .... ..... [D.P.M.T.2008]
  • a) Mesosphere
  • b) Thermosphere
  • c) Stratosphere
  • d) Troposphere
Q.20
The association between ants and some members of family rubiaceae is .... .... [A.M.U. 1997]
  • a) Ornithophily
  • b) Entomophily
  • c) Myrmecophily
  • d) Anemophily
Q.21
Which one is first colonizer of bare rock/pioneer community in Xerarch? .... .... [Kerala 2012]
  • a) Annual herb
  • b) Perennial herb
  • c) Lichen
  • d) Scrub
Q.22
Physical and chemical conditions of soil are studied under .... .... [J.I.P.M.E.R.2000]
  • a) Topographic factors
  • b) Edaphic factors
  • c) Biotic factors
  • d) Climatic factors
Q.23
Which one is an amphibious plant .... .... [Guj.C.E.T. 2006]
  • a) Lotus
  • b) Vallisneria
  • c) Typha
  • d) Trapa
Q.24
The sum total of the populations of the same kind of organisms constitute .... .... [C.B.S.E.1993]
  • a) Colony
  • b) Genus
  • c) Community
  • d) Species
Q.25
Increase in number of individuals in a population represents .... .... [H.P.P.M.T. 2005]
  • a) Natality
  • b) Mortality
  • c) Density
  • d) Diversity
Q.26
Primary succession is development of communities on .... ..... [H.P.P.M.T. 2010]
  • a) Newly exposed unoccupied habitat
  • b) Cleared forest area
  • c) Freshly harvested crop field
  • d) Pond filled after a dry season
Q.27
Praying mantis is good example of .... ... [C.B.S.E.2006]
  • a) Camouflage
  • b) Warning colouration
  • c) Mullerian mimicry
  • d) Social insect
Q.28
Two opposite forces operate in growth and development of every population. One of them has ability to reproduce at a given rate. .... .... [C.B.S.E. 2003]
  • a) Morbidity
  • b) Fecundity
  • c) Biotic potential
  • d) Environment resistance
Q.29
Dominant producers of neritic zone of sea are .... .... [Odisha 2007]
  • a) Phytoplankton
  • b) Zooplankton
  • c) Micro-organisms
  • d) Diatoms
Q.30
An adaptation of plants to water scarcity and high temperature is .... .... [Guj.C.E.T. 2010]
  • a) Succulent stem stores water
  • b) Poorly developed root
  • c) They shed their leaves
  • d) In unfavorable season, plants survive in dormant state as seeds
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