Q.1
Which of the following maintains the opening and closing of stomatal pore ?
  • Guard cell
  • Chlorophyll
  • Oxygen
  • Rate of photosynthesis
Q.2
Which of the following method is used for vegetative propagation of sugarcane ?
  • Grafting
  • Artificial reproduction
  • Budding
  • Tissue culture
Q.3
Example of unisexual flower is -
  • Hibiscus
  • Mustard
  • Papaya
  • Rose
Q.4
The process by which the plant embryo develops into seedling under appropriate condition is known as-
  • Germination
  • Reproduction
  • Fertilization
  • Plantation
Q.5
In energy pyramid of terrestrial ecosystem, which of the following is present at the bottom of the pyramid ?
  • Primary consumer
  • Producer
  • Top carnivores
  • Secondary consumer
Q.6
The technique that is used to grow ornamental plants from one parent is known as -
  • Tissue culture
  • Vegetative propagation
  • Hybrid
  • Budding
Q.7
In muscle cells the break down of pyruvate in absence of oxygen produces -
  • Ethanol + \(CO_2\) + Energy
  • Lactic acid + Energy
  • \(CO_2\) + Water + Energy
  • Water + Energy
Q.8
Pulmonary vein carries oxygen from -
  • Left auricle to left ventricle
  • Right ventricle to lung
  • From lungs to left auricle
  • Brain to left auricle
Q.9
The structure of kidney that collects the filtrate is known as -
  • Bowman’s capsule
  • Capillaries
  • Nephron
  • Urinary bladder
Q.10
All the involuntary actions of human body is controlled by -
  • Fore brain
  • Hind brain
  • Heart
  • Tissue
Q.11
The less secretion of growth hormone from pituitary gland results -
  • Dwarfism
  • Gigantism
  • Acromegaly
  • Anaemia
Q.12
The life span of human egg is -
  • 24 hours
  • 48 hours
  • 76 hours
  • 90 hours
Q.13
The genotypic ratio of Mendel’s monohybrid cross is -
  • 3:1
  • 1:2:1
  • 9:3:3:1
  • 2:1
Q.14
The study that deals with the relationship distance of organisms on the basis of their DNA structure is known as
  • Molecular phylogeny
  • Fossil study
  • Embryology
  • Histology
Q.15
If a plane mirror is rotated by an angle \(15^0\) then the reflected light will be rotated by
  • \(15^0\)
  • \(30^0\)
  • \(45^0\)
  • \(7.5^0\)
Q.16
If an object is placed away from the centre of curvature of a concave mirror, then the image would be -
  • Magnified, real, inverted
  • Diminished, real, erect
  • Diminished, virtual, erect
  • Diminished, real, inverted
Q.17
At total internal reflection the angle between the reflected ray and the incident ray is
  • Two Times the angle of incidence
  • Equal to the angle of incidence
  • Zero (0°)
  • 90°
Q.18
If an object is placed at the focus of a biconvex lens then the image will be formed
  • At focus on the other side of the lens
  • At the centre of curvature
  • At infinity
  • In between focus and centre of curvature
Q.19
The correct sequence in the increasing order of frequency is
  • Violet, yellow, orange
  • Red, orange, violet
  • Blue, yellow, violet
  • Blue, red, orange
Q.20
A person can see distant object clearly but find it difficult to read a book. The person is suffering from -
  • Astigmatism
  • Myopia
  • Hypermetropia
  • Presbyopia
0 h : 0 m : 1 s