MCQOPTIONS
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MCQOPTIONS
This section includes 533 Mcqs, each offering curated multiple-choice questions to sharpen your Life Sciences knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
Lower flower in grass Iscaemum is |
| A. | dioecism |
| B. | unisexual |
| C. | bisexual |
| D. | three stamens |
| Answer» C. bisexual | |
| 452. |
Shoots follow growth movements which is |
| A. | negative hydrotropism |
| B. | positive hydrotropism |
| C. | static hydrotropism |
| D. | neutral hydrotropism |
| Answer» C. static hydrotropism | |
| 453. |
Ultrafiltration does not retain |
| A. | water |
| B. | glucose |
| C. | amino acids |
| D. | all of above |
| Answer» E. | |
| 454. |
In hypogeal germination, the cotyledons are |
| A. | carried above the ground |
| B. | remain below the surface of the soil |
| C. | not existed |
| D. | lifted along with Plumule |
| Answer» C. not existed | |
| 455. |
Growth of radicle occurs when |
| A. | Plumule grows |
| B. | cotyledons are shed |
| C. | it pushes the testa at micropyle |
| D. | Plumule erupts out of soil |
| Answer» D. Plumule erupts out of soil | |
| 456. |
Photolysis is known to occur only in |
| A. | light dependent stage |
| B. | light independent stage |
| C. | dark stage |
| D. | translocation |
| Answer» B. light independent stage | |
| 457. |
Transpiration occurs mainly through the |
| A. | stomata of leaf |
| B. | epidermis of shoot |
| C. | epidermis of leaf |
| D. | cuticle |
| Answer» B. epidermis of shoot | |
| 458. |
Sieve tubes are assisted through |
| A. | lumen |
| B. | lignin |
| C. | companion cells |
| D. | pits |
| Answer» D. pits | |
| 459. |
Enclosed seeded plants are another name for |
| A. | Angiospermae |
| B. | Gymnosperms |
| C. | gametophyte |
| D. | sporophyte |
| Answer» B. Gymnosperms | |
| 460. |
Plants which belong to group sphenopsida are also called |
| A. | arthrophytes |
| B. | bryophytes |
| C. | prokaryotes |
| D. | eukaryotes |
| Answer» B. bryophytes | |
| 461. |
Capsicum Anum and Capsicum Frutespens are rich in vitamin A and |
| A. | E |
| B. | D |
| C. | C |
| D. | K |
| Answer» D. K | |
| 462. |
A family of plant mostly found in warm temperate regions is |
| A. | Fabaceae |
| B. | Rosaceae |
| C. | Cassia |
| D. | papilionaceae |
| Answer» B. Rosaceae | |
| 463. |
Non-reproductive parts of a plant are |
| A. | sepal and petal |
| B. | stamen and carpel |
| C. | sepal and stamen |
| D. | petal and carpel |
| Answer» D. petal and carpel | |
| 464. |
Which of following produce male gametophytes in flowering plants? |
| A. | stamen |
| B. | pistil |
| C. | carpel |
| D. | petals |
| Answer» B. pistil | |
| 465. |
Presence of starch verifies that |
| A. | photosynthesis has not taken place |
| B. | photosynthesis has taken place |
| C. | it has nothing to do with photosynthesis |
| D. | photosynthesis hasn't taken place |
| Answer» C. it has nothing to do with photosynthesis | |
| 466. |
In plants, Bulb is a |
| A. | horizontal underground stem |
| B. | modified shoot |
| C. | thick underground stem |
| D. | swollen underground stem |
| Answer» C. thick underground stem | |
| 467. |
Which of following structures were female gametangia of ancient plants? |
| A. | antheridia |
| B. | marchantia |
| C. | Sporocyte |
| D. | archegonia |
| Answer» E. | |
| 468. |
Which is the most common way of pollination in grass |
| A. | insect pollinated |
| B. | wind pollinated |
| C. | cross pollinated |
| D. | self pollinated |
| Answer» C. cross pollinated | |
| 469. |
Presence of tubifax worms indicate that |
| A. | the parasites are found in the intestine |
| B. | cellulose in grass can easily be digested by pri-consumers |
| C. | water is highly polluted |
| D. | BOD is very low |
| Answer» D. BOD is very low | |
| 470. |
Maize is an example of |
| A. | Epigeal Germination |
| B. | Hypogeal Germination |
| C. | Epi-hypogeal Germination |
| D. | Hypo-Epigeal Germination |
| Answer» C. Epi-hypogeal Germination | |
| 471. |
Disadvantages of anti-histamine include |
| A. | runny nose |
| B. | sore eyes |
| C. | feeling very sleepy |
| D. | insomnia |
| Answer» D. insomnia | |
| 472. |
Leaf which is large in size with divided vein and veinlets with expanded lamina is called |
| A. | aphyll |
| B. | macrophyll |
| C. | microphyll |
| D. | megaphyll |
| Answer» E. | |
| 473. |
Lowering of leaves in evening and raising them in morning are regarded as |
| A. | chemo tactic movement |
| B. | photo tactic movement |
| C. | sleep movements |
| D. | rapid movements |
| Answer» D. rapid movements | |
| 474. |
If the fatty acids can take in no more of hydrogen atoms (H), it is known as |
| A. | saturated fats |
| B. | unsaturated fats |
| C. | monosaturated fats |
| D. | biunsaturated fats |
| Answer» B. unsaturated fats | |
| 475. |
In plants mature sieve tube cell |
| A. | looses its central nucleus |
| B. | looses its central vacuoles |
| C. | the cell walls become fully permeable |
| D. | the cell wall becomes impermeable |
| Answer» C. the cell walls become fully permeable | |
| 476. |
Bone lighter in weight and rich in blood vessels and highly porous is |
| A. | bone marrow |
| B. | sponge bone |
| C. | compact bone |
| D. | cartilage |
| Answer» C. compact bone | |
| 477. |
Bisexual flowers may avoid self-pollination if |
| A. | anther and stigma is absent |
| B. | anther and stigma do not produce enough eggs and pollens |
| C. | anther and stigma mature at different times |
| D. | anther and stigma mature at same times |
| Answer» D. anther and stigma mature at same times | |
| 478. |
Inflorescences in plants are |
| A. | stem tubers |
| B. | horizontal underground shoots |
| C. | a definite cluster of flowers |
| D. | scented flowers |
| Answer» D. scented flowers | |
| 479. |
Fleshy scale leaves are found in |
| A. | Rhizome |
| B. | Corm |
| C. | Stem tuber |
| D. | Bulb |
| Answer» E. | |
| 480. |
Leaves are not essential for the |
| A. | intake of carbon dioxide |
| B. | starch formation |
| C. | process of photosynthesis |
| D. | receiving sunlight |
| Answer» C. process of photosynthesis | |
| 481. |
In plants, legumes are |
| A. | succulent fruits |
| B. | dry fruits |
| C. | hard pericarp |
| D. | ripped fruits |
| Answer» C. hard pericarp | |
| 482. |
In Clitoria flower, the sepals are attached |
| A. | inferiorly |
| B. | superiorly |
| C. | at the free end of the calyx |
| D. | over the petals |
| Answer» D. over the petals | |
| 483. |
Guard cells of stoma are |
| A. | irregular in shape |
| B. | convex in shape |
| C. | long and cylindrical in shape |
| D. | kidney-shaped |
| Answer» E. | |
| 484. |
Distal end of megasporangium become specialized for capturing |
| A. | pollen |
| B. | food |
| C. | water |
| D. | oxygen |
| Answer» B. food | |
| 485. |
Integumented indehiscent megasporangium is a/an |
| A. | sperm |
| B. | ova |
| C. | ovule |
| D. | spores |
| Answer» D. spores | |
| 486. |
Class fillicineae, class gymnospermae and class Angiospermae are sub-division of group |
| A. | lycopsida |
| B. | pterosida |
| C. | sphenopsida |
| D. | bryopsida |
| Answer» C. sphenopsida | |
| 487. |
By atternation of generations, spore of a moss develops itself into an alga like structure known as |
| A. | psilopsida |
| B. | protonema |
| C. | marchantia |
| D. | bryopsida |
| Answer» C. marchantia | |
| 488. |
Leaves called fronds are coiled at immature stages this pattern constituted is termed as |
| A. | circination |
| B. | frond leaves |
| C. | circinate vernation |
| D. | leafless |
| Answer» D. leafless | |
| 489. |
Production of only one kind of spores is called |
| A. | heterospory |
| B. | homospory |
| C. | dispory |
| D. | monospory |
| Answer» C. dispory | |
| 490. |
Locopsids are also called |
| A. | fungus |
| B. | algae |
| C. | mosses |
| D. | ferns |
| Answer» D. ferns | |
| 491. |
Sepal and petals gives protection to the |
| A. | stamen |
| B. | carpel |
| C. | Both a and b |
| D. | filament |
| Answer» D. filament | |
| 492. |
Non-vascular plants are also called as |
| A. | Bryophyta |
| B. | tracheophyta |
| C. | chronophyta |
| D. | alveophyta |
| Answer» B. tracheophyta | |
| 493. |
Sepals and petals also helps in pollination, so after pollination they usually |
| A. | developed |
| B. | fall off |
| C. | regrow |
| D. | remain same |
| Answer» C. regrow | |
| 494. |
Plant body is attached to soil by help of rhizords in species of Bryophytes known as |
| A. | protonema |
| B. | psilopsida |
| C. | gametophyte |
| D. | Marchantia |
| Answer» E. | |
| 495. |
Anthoceropsida possesses stomata and chloroplasts in epidermis which helps it in preparing their own food by |
| A. | mitosis |
| B. | photosynthesis |
| C. | meosis |
| D. | calvin cyle |
| Answer» C. meosis | |
| 496. |
Seed is composed of an embryo and |
| A. | food |
| B. | water |
| C. | chlorophyll |
| D. | sunlight |
| Answer» B. water | |
| 497. |
Megaspores produced after evolutionary phase germinated to form |
| A. | megagametophyte |
| B. | microgametophyte |
| C. | macrogametophyte |
| D. | Both a and b |
| Answer» B. microgametophyte | |
| 498. |
Photosynthesis depends upon the enzyme reactions in |
| A. | chlorophyll |
| B. | chloroplasts |
| C. | cellulose |
| D. | starch |
| Answer» C. cellulose | |
| 499. |
Brightly colored structures to attract pollination are known as |
| A. | sepals |
| B. | leaves |
| C. | stem |
| D. | petals |
| Answer» E. | |
| 500. |
Which of following structures were male gametangia of ancient plants? |
| A. | archegonia |
| B. | antheridia |
| C. | marchantia |
| D. | Sporocyte |
| Answer» C. marchantia | |