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Std 12 les 5 Bio
Quiz by Sumila Kamble
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1.The branch of biology that deals with study ofform and structure of organisms is called
2.The root system of a plant is
3. The type of root that develops from the radicle is known as
4.Roots developed from parts of the plant other than radicle are called
5.A fibrous root system is better adapted than tap root system for
6.The roots that originate from the base of the stem are:
7. ____________helps in longitudinal growth ofroot.
8. Which of the following is NOT a modificational function of the root?
9. Prop roots in Banyan are modification for
10. Which of the following is NOT correctly paired?
11. Which of the following do NOT show adventitious roots modified for support?
12. Sweet potato is a modified
13. Roots play insignificant role in absorption of water in
14. Find cut the correct statement from the following.
15. Pneumatophores is a modification of roots for
16.__________are negatively geotropic.
17. Pick out the wrong statement from the following
18. An example of edible underground stem is
19. In watermelon the spirally coiled stem modifications which help in climbing are developed from
20.Assertion: Sometimes underground part of a plant can be a stem. Reason: The underground parts of plants sometimes bear nodes, internodes, axillary buds and show absence of root hair.
21.stem which can be differentiated from reset because it
22.Which part of the plant helps in vegetative propagation?
23.A lateral branch with short internodes, rosette ofleaves and a tuft of roots below each node is found in
24. Stem thorns is a characteristic feature seen in
25.In Bougainvillea, thorns are the modifications of
26. A thin and delicate stem branch that runs above the soil surface and bears adventitious roots at nodes is found in
27. Which one of the following is a xerophytic plant in which the stem modified into flat green and succulent structure?
28. In humid climate, presence of thorns in shrubs is modification of stem
29. Thorn is a stem structure because it
30.Which of the following modification is not a stem
31.Offsetsare produced by
32.Swollenlower end of leaf stalk is
33.Leaf base expanded into a sheath which covers the stem partially can be observed in
34. Stipules are
35.Following statements are true about petiole, except
36.Venation is a term used of arrangement of
37.Which of the following is NOT function of veins of leaf?
38.A monocot can be distinguished from a dicot by
39.Which of the following plant shows reticulate venation?
40. Which of the following statement is WRONG?
41. The arrangement of the leaves at a node on the stem is called.
42. Which of the following shows whorled phyllotaxy?
43. The fleshy leaves of garlic and onion are modified for
44. Leaves become modified into spines in
45. Pitcher plant shows modification of __________ to trap the insect.
46.In racemose inflorescence, the arrangement of flowers is
47. The arrangement of flowers on the floral axis is termed as
48.Gamosepalous is a condition in which calyx is
49. Flowers are unisexual in
50. Petals are usually brightly coloured to