NEET NCERT QUESTION TRUE (T) OR FALSE (F)
- In dicotyledons, the leaf base expands into a sheath covering the stem partially.
2. Leaves originate from shoot apical meristems and are arranged in a basipetal order.
3. In non-leguminous plants, the leaf base becomes swollen, which is called the pulvinus.
4. Veins act only as channels of transport for water, minerals and food materials.
5. In Rhizophora, many roots come out of the ground grow vertically upwards for the absorption of minerals.
6. Fibrous roots of carrot, turnip and tap roots of sweet potato , get swollen and store food.
7. The root is covered at the apex by a thimble-like structure called the root hair.
8. The shape, margin, apex, surface and extent of incision of lamina varies in different leaves.
9. Stem can act as organs of perennatio in Euphorbia, to tide over conditions unfavourable for growth.
10. A sterile stamen is called staminode.
11. Axillary buds of stem may also get modified into woody, straight and pointed throns in Citrus and Bougainvillea.
12. In perietal placentation, ovary is only two- chambered due to the absence of false septum.
13. Leaf bears a bud in its axil.
14. If pericarp is thin and dry, it is differentiated into the outerepicarp, the middle mesocarp and the inner endocarp.
15. A flower is modified shoot where internodes elongate and the axis gets condensed.
16. A bud is present in the axil of petiole in both simple and compound leaves, but not in the axil of leaflets of the compound leaf.
17. The position of the mother axis with respect to the flower is represented by a dot on top of the floral diagram.
18. Drupes develop from multicarpellary ovary.
19. In coconut, the mesocarp is fleshy.
20. Generally, monocotyledonous seeds are non-endospermic but some, as in orchids,are endospermic.
ANSWER
1.F, 2. F, 3. F, 4. F, 5. F, 6. F, 7. F, 8. F, 9. F , 10. T,
11. T, 12. F, 13. T, 14. F, 15. F, 16. T , 17. T, 18. F, 19. F, 20. F,
QUOTE:- END IS NOT THE END IF FACT E.N.D. MEANS “EFFORTS NEVER DIES”
Dr APJ Abdul Kalam
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