MCQOPTIONS
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MCQOPTIONS
This section includes 28 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which one these are never present in frog?s ovary[CBSE PMT 1989] |
| A. | Oogonia |
| B. | Corpus luteum |
| C. | Ovarian follicles |
| D. | Germinal epithelium |
| Answer» C. Ovarian follicles | |
| 2. |
Which of the following parts is not a part of the small intestine of frog |
| A. | Ileum |
| B. | Jejunum |
| C. | Duodenum |
| D. | None of these |
| Answer» C. Duodenum | |
| 3. |
In dicotyledonous angiosperms, the dermatogen originate from |
| A. | Terminal group of initial |
| B. | The middle group of initial |
| C. | Both the terminal and middle initial |
| D. | The periblem during later development |
| Answer» B. The middle group of initial | |
| 4. |
In a transverse section of a dicot root |
| A. | The protoxylem vessels are present towards the periphery and metaxylem vessels are present towards the centre |
| B. | The protoxylem vessels are present towards the centre and metaxylem vessels are present towards the periphery |
| C. | Both protoxylem and metaxylem vessels are present towards the centre |
| D. | Both protoxylem and metaxylem vessels are present towards the periphery |
| Answer» E. | |
| 5. |
A hundred year old tree which shows well marked annual rings in its trunk will have |
| A. | An irregular number of annual rings which may increase or decreaseall along the length of the stem |
| B. | More than hundred annual rings at the base and only about 50 rings at the apex |
| C. | Only about a hundred annual rings at the base and an uniformly decreasing number of annual rings towards the apex |
| D. | The same number of annual rings from the base of its trunk to its apex |
| Answer» D. The same number of annual rings from the base of its trunk to its apex | |
| 6. |
Trees may be damaged by animals which rub against them, wearing away a strip of bark right around the tree trunk and exposing the xylem. The tree will then |
| A. | Die quickly, because the leaves are deprived of food and water |
| B. | Die quickly, because fungi enter the trunk through the wounds |
| C. | Continue to grow, because bark always regrows to cover a wound |
| D. | Die slowly, because the roots cannot replenish their food reserves |
| Answer» B. Die quickly, because fungi enter the trunk through the wounds | |
| 7. |
The quiescent centre in root meristem serves as a[AIIMS 2003] |
| A. | Site for storage of food, which is utilized during maturation |
| B. | Reservoir of growth hormones |
| C. | Reserve for replenishment of damaged cells of the meristem |
| D. | Region for absorption of water |
| Answer» D. Region for absorption of water | |
| 8. |
The floral formula for Malvaceae is [RPMT 1991, 97] |
| A. | ÅEpi(3?7) K(5) C(5) A(¥) \[\underline{{{G}_{(5)}}}\] |
| B. | ÅEpi(3?7) K(5) C5 A5 \[\underline{{{G}_{(5)}}}\] |
| C. | ÅEpi(3-7) K(5) C5 A(¥) \[\underline{{{G}_{(5)}}}\] |
| D. | ÅEpi(3-7) K(5) C(5) A(¥) \[\underline{{{G}_{(3-\infty )}}}\] |
| Answer» D. ÅEpi(3-7) K(5) C(5) A(¥) \[\underline{{{G}_{(3-\infty )}}}\] | |
| 9. |
Which of the following is a non-endospermic monocot seed [Bihar MDAT 1991] |
| A. | Plumbago |
| B. | Castor |
| C. | Linseed |
| D. | Alisma |
| Answer» E. | |
| 10. |
Zygomorphy in Cassia flower is due to |
| A. | Calyx |
| B. | Corolla |
| C. | Staminodes |
| D. | Placentation |
| Answer» D. Placentation | |
| 11. |
Roots of which plant are used for treating blood pressure |
| A. | Aconite |
| B. | Rauwolfia |
| C. | Sarasparilla |
| D. | Vinca |
| Answer» C. Sarasparilla | |
| 12. |
An apocarpous flower is found in [CPMT 1976; BHU 1999; JIPMER 2000] |
| A. | Caesalpinnia |
| B. | Ranunculus |
| C. | Brassica |
| D. | Datura |
| Answer» C. Brassica | |
| 13. |
In Acacia species, the first few leaves are pinnately compound. Then there are leaves with flattened petiole and fewer pinnae. The leaves of adult plant has parallel veined flattened petiole and no pinnae. It shows that [CPMT 1991] |
| A. | Leaves of adult plant are reduced to phyllodes while those of the seedling are unreduced |
| B. | The parallel-veined green structures of the adult plant are phylloclades |
| C. | The plant shows developmental heterophylly, compound in seedling and simple in adult plant |
| D. | The leaves of adult plant are unreduced while they are reduced in the seedling stage |
| Answer» B. The parallel-veined green structures of the adult plant are phylloclades | |
| 14. |
Belt's corpuscles and leghaemoglobin is found in plants belonging to |
| A. | Papilionatae and calsalpinoideae respectively |
| B. | Caesalpinoideae and Mimosoideae respectively |
| C. | Mimosoideae and Papilionatae respectively |
| D. | Papilionatae alone |
| Answer» D. Papilionatae alone | |
| 15. |
Horizontal branched rhizome is called straggling rhizome. It can be monopodial or sympodial. Monopodial rhizome is found in |
| A. | Lotus (Nelumbo) |
| B. | Saccharum (Moonj) |
| C. | Allium sativum |
| D. | Both [a] and [b] correct |
| Answer» E. | |
| 16. |
Read the assertion and reason carefully: Assertion: Trichomes increase the absorptive surface. Reason : Trichomes are sub epidermal in origin. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 17. |
Read the assertion and reason carefully: Assertion: Xylem and phloem are also called as leptom and hadrome respectively. Reason : Xylem and phloem form conducting tissue of the plant. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 18. |
Read the assertion and reason carefully: Assertion: All tissues lying inside vascular cambium are called as bark. Reason : Bark is made up of phellogen, phellem and phelloderm lying inside secondary phloem. [AIIMS 1994] |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» E. If the assertion is false but reason is true | |
| 19. |
Read the assertion and reason carefully: Assertion: Human travellers also disperse seeds and fruits. Reason : Generally seeds of economically important crops are introduced to new areas. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 20. |
Read the assertion and reason carefully: Assertion: Tepals may be free or fused. Reason : When sepals and petals are similar, they are called as tepals. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 21. |
Read the assertion and reason carefully: Assertion: In cyathium, several male flowers surround a single female flower. Reason : The involucre is nectariferous. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 22. |
Read the assertion and reason carefully: Assertion: In corymb, all the flowers lie at the same level. Reason : Pedicels of all the flowers are of same length. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 23. |
Read the assertion and reason carefully: Assertion: Mint leaves give off the strong odour. Reason : Glandular hairs of mint leaves secrete oil. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |
| 24. |
Read the assertion and reason carefully: Assertion: In caducous plants, leaves are never formed. Reason : In deciduous plants, all leaves fall together. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» F. | |
| 25. |
Read the assertion and reason carefully: Assertion: Small leaflets are present on the phyllode of Parkinsonia aculeata. Reason : Phyllode does not bear leaves and flowers. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 26. |
Read the assertion and reason carefully: Assertion: Thorns of Artabotrys are modified floral stalks. Reason : In Antigonon, the upper floral buds develop thorns. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» D. If both the assertion and reason are false | |
| 27. |
Read the assertion and reason carefully: Assertion: In floating aquatic plants, root caps are absent. Reason : Root pockets are present in aquatic plants. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» C. If the assertion is true but the reason is false | |
| 28. |
Read the assertion and reason carefully: Assertion: Adventitious roots are formed from any part of plant other than the radicle.Reason : Adventitious roots are mostly initiated by differentiating vascular tissues of the organ. |
| A. | If both the assertion and the reason are true and the reason is a correct explanation of the assertion |
| B. | If both the assertion and reason are true but the reason is not a correct explanation of the assertion |
| C. | If the assertion is true but the reason is false |
| D. | If both the assertion and reason are false |
| E. | If the assertion is false but reason is true |
| Answer» B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion | |