1. Which of the following gases reduces the oxygen carrying capacity of the blood?
(a) Nitric oxide
(b) Carbon dioxide
(c) Carbon monoxide
(d) Nitrous oxide
2. Pollination by birds is called:
(a) Anemophily
(b) Entomophily
(c) Autogamy
(d) Ornithophily
3. The amount of light entering into eye can be controlled and regulated by ________.
(a) Sclera
(b) cornea
(c) pupil
(d) retina
3. If the Distance-Time graph is a curve then it represents ___________.
(a) uniform speed
(b) constant displacement
(c) uniform momentum
(d) non-uniform speed
4. ______ of species is a reflection of their evolutionary relationships.
(a) Characteristics
(b) Adaptation
(c) Illustration
(d) Classification
5. Robert Hooke discovered cells by observing them in a ______.
(a) Onion peel
(b) Cork slice
(c) Pond water
(d) No option is correct
6. The skin, the lining of the mouth, the lining of the blood vessels, lung alveoli and kidney tubules are all made of which type of tissue?
(a) Epithelial tissue
(b) Connective tissue
(c) Muscular tissue
(d) Nervous tissue
7. As an object falls freely its _____________.
(a) Kinetic energy gets converted into potential energy
(b) Potential energy gets converted into kinetic energy
(c) Momentum gets converted into gravitational force
(d) Gravitational force gets converted into momentum
8. Which of the following gases reduces the oxygen carrying capacity of the blood?
(a) Nitric oxide
(b) Carbon dioxide
(c) Carbon monoxide
(d) Nitrous oxide
9. The ________ is the stem-like part of the leaf that joins the blade to the stem.
(a) Stipules
(b) Petiole
(c) Midrib
(d) Vein
10. The thin layer of living cells just inside the bark of a tree is called __________.
(a) Pith
(b) Crown
(c) Xylem
(d) Cambium
11. Tears in the eyes are produced by which of the following glands?
(a) Lacrimal gland
(b) Thyroid gland
(c) Pituitary gland
(d) Hypothalamus gland
12. _______ is the branch of biology that deals with the study of the structure of organisms and their organs.
(a) Ecology
(b) Anatomy
(c) Chronobiology
(d) Mycology
13. Who among the following coined the term “battery” to describe linked capacitors?
(a) Benjamin Franklin
(b) Luigi Galvani
(c) John Frederic Deniell
(d) Lewis Urry
14. The enzyme, Lipase is produced by which organ of the body?
(a) Lung
(b) Salivary gland
(c) Liver
(d) Pancreas
15. Blue Vitriol is another name for which of the following?
(a) Copper Sulphate
(b) Sodium Chloride
(c) Cuppric oxide
(d) Magnesium Oxide
16. One pikogram is equal to-
(a) gram
(b) gram
(c) gram
(d) gram
17. Energy conservation means-
(a) Generation and destruction of energy
(b) Energy could be created
(c) Energy could not be created but destroyed
(d) Energy can neither be created nor destroyed
18. If a person sitting in a lift then when will he feel that his weight gets increased?
(a) When the elevator going upward expeditiously
(b) When the elevator going down expeditiously.
(c) Going upward with constant velocity.
(d) Going downward with constant velocity.
19. Propagation of sound can be visualised as propagation of _______variations in the medium.
(a) Energy
(b) Power
(c) Force
(d) Pressure
20. Spherical form of raindrop is due to-
(a) Density of liquid
(b) Surface tension
(c) Atmospheric pressure
(d) Gravitational force