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.
| 1. |
Which of the following condition is TRUE for Calotropis? |
| A. | Epiphyllous |
| B. | Gynandrous |
| C. | Epipetalous |
| D. | Synandrous |
| Answer» C. Epipetalous | |
| 2. |
Match the correct columns. |
| A. | 1-B, 2-A, 3-D, 4-C |
| B. | 1-D, 2-C, 3-A, 4-B |
| C. | 1-C, 2-A, 3-B, 4-D |
| D. | 1-A, 2-D, 3-B, 4-CView Answer |
| Answer» B. 1-D, 2-C, 3-A, 4-B | |
| 3. |
Melia, a flower has a pistil of two or more fused carpels, which of the following condition describe this? |
| A. | One carpel |
| B. | Fused carpel |
| C. | Fused androcium |
| D. | One androcium |
| Answer» C. Fused androcium | |
| 4. |
Which of the following is NOT the part of four whorls of flower leaves? |
| A. | Calyx |
| B. | Corolla |
| C. | Androcium |
| D. | Stem |
| Answer» E. | |
| 5. |
In flowering plants, in the dicotyledonous stems, |
| A. | pith lies at the margins of the stem |
| B. | xylem lies outside phloem |
| C. | phloem lies outside xylem |
| D. | cambium covers the pith cells |
| Answer» D. cambium covers the pith cells | |
| 6. |
Living matter of a cell is called as |
| A. | chlorophyll |
| B. | biomass |
| C. | muscle cells |
| D. | protoplasm |
| Answer» E. | |
| 7. |
In plants, Piliferous layer contains |
| A. | root cap |
| B. | root hair |
| C. | vascular bundles |
| D. | non vascular bundles |
| Answer» C. vascular bundles | |
| 8. |
For seed dispersal, plants living on river banks depend on |
| A. | water |
| B. | insects |
| C. | wind |
| D. | animals |
| Answer» B. insects | |
| 9. |
Plants may have excess of |
| A. | starch (C₆H₁₀O₅)ₙ only |
| B. | sugar (CₙH₂ₘOₘ) only |
| C. | carbon dioxide (CO₂) |
| D. | starch (C₆H₁₀O₅)n and sugar (CₙH₂ₘOₘ) |
| Answer» E. | |
| 10. |
Pollen grains are produced inside the |
| A. | stamen |
| B. | pistil |
| C. | anther |
| D. | pollen sacs |
| Answer» E. | |
| 11. |
Tubular outgrowth of an epidermal cell is also known as |
| A. | branch |
| B. | stem |
| C. | root hair |
| D. | petiole |
| Answer» D. petiole | |
| 12. |
How old are earlier fossils of vascular plants? |
| A. | 5 million |
| B. | 10 million |
| C. | 425 million |
| D. | 2 million |
| Answer» D. 2 million | |
| 13. |
Which of following is homosporous? |
| A. | hornworts |
| B. | liverworts |
| C. | spiked mosses |
| D. | club mosses |
| Answer» E. | |
| 14. |
Cotyledons gets developed from |
| A. | vegetative nucleus |
| B. | generative nucleus |
| C. | zygote |
| D. | embryo |
| Answer» E. | |
| 15. |
Number of convoluted tubules inside cortex is |
| A. | one |
| B. | two |
| C. | three |
| D. | five |
| Answer» C. three | |
| 16. |
Opening of bud is achieved when leaf in bud condition shows more |
| A. | transpiration |
| B. | growth |
| C. | respiration |
| D. | photosynthesis |
| Answer» C. respiration | |
| 17. |
Vascular plants that produce two types of spores are called |
| A. | Monosporous |
| B. | heterosporous |
| C. | homosporous |
| D. | Bisporous |
| Answer» C. homosporous | |
| 18. |
A spore germinates at a suitable temperature after falling on moist soil and produces a |
| A. | gamate |
| B. | pith |
| C. | thallus |
| D. | prothallus |
| Answer» E. | |
| 19. |
Groups of sporophyll that form corn like structures are called |
| A. | strobili |
| B. | Sporozoa |
| C. | sori |
| D. | moss |
| Answer» B. Sporozoa | |
| 20. |
Which of following structures is localized area of cellular division at tip of shoots and roots? |
| A. | antheridia |
| B. | marchantia |
| C. | apical meristems |
| D. | mitotic spindle |
| Answer» D. mitotic spindle | |
| 21. |
Scar where seed stalk is attached is called |
| A. | testa |
| B. | hilum |
| C. | micropyll |
| D. | macrophyll |
| Answer» C. micropyll | |
| 22. |
In grass Ischaemum, the upper spikelet is |
| A. | sessile |
| B. | stalked |
| C. | larger |
| D. | filament |
| Answer» C. larger | |
| 23. |
After pollens get attached to sticky stigma the |
| A. | androecium dries |
| B. | androecium gets detached (withers off) |
| C. | keel petals enclose stamens and stigma again |
| D. | flower stops producing nectar as a mechanism to stop further visits of insects and bees |
| Answer» D. flower stops producing nectar as a mechanism to stop further visits of insects and bees | |
| 24. |
Tracheids are found in xylem as |
| A. | pectin |
| B. | cellulose |
| C. | bundle caps |
| D. | seive tubes |
| Answer» D. seive tubes | |
| 25. |
After fertilization, ovary develops into |
| A. | fruit |
| B. | seed |
| C. | ovule |
| D. | funicle |
| Answer» B. seed | |
| 26. |
Leaves with highly branched vascular system are called |
| A. | leaf glade |
| B. | spike |
| C. | Microphylls |
| D. | megaphylls |
| Answer» E. | |
| 27. |
In grasses, spikelet is formed through |
| A. | flower enclosed in bracts |
| B. | pair of flower enclosed and protected by bracts |
| C. | a pair of bracts |
| D. | an open flower |
| Answer» C. a pair of bracts | |
| 28. |
Movements which occur upon contact are called |
| A. | thermo nasty |
| B. | photo nasty |
| C. | chemonasty |
| D. | hyponasty |
| Answer» E. | |
| 29. |
Xylem and phloem are called |
| A. | non vascular tissue |
| B. | vascular tissue |
| C. | smooth tissue |
| D. | supporting tissues |
| Answer» C. smooth tissue | |
| 30. |
Bilaterally symmetrical refers to if a |
| A. | flower can be halved into two equal halves along more than one longitudinal plane passing through th |
| B. | flower can be halved along one dimensional plane only |
| C. | flower can be halved forming to equal lobes |
| D. | plant can be halved forming to equal and congruent lobes |
| Answer» C. flower can be halved forming to equal lobes | |
| 31. |
In order to restore the vigor of species, pollination must be |
| A. | self pollination |
| B. | cross pollination |
| C. | wind pollination |
| D. | insect pollination |
| Answer» C. wind pollination | |
| 32. |
Megasporangium, megaspore, and integument together form the |
| A. | ovum |
| B. | ovule |
| C. | pollen |
| D. | stigma |
| Answer» C. pollen | |
| 33. |
Upon water absorption, the food reserves are needed to be |
| A. | taken from environment |
| B. | broken down |
| C. | stored for Plumule development |
| D. | all of above |
| Answer» C. stored for Plumule development | |
| 34. |
External agencies are not required in |
| A. | natural vegetative propagation |
| B. | sexual reproduction |
| C. | bisexual reproduction |
| D. | trisexual reproduction |
| Answer» B. sexual reproduction | |
| 35. |
Water and dissolved salts are carried through |
| A. | veins |
| B. | midrib of leaf |
| C. | xylem |
| D. | phloem |
| Answer» D. phloem | |
| 36. |
With an increase in seed size upon germination, the dry mass of seeds |
| A. | increases |
| B. | decreases |
| C. | vanishes |
| D. | grows proportionally with seed |
| Answer» C. vanishes | |
| 37. |
In context of reproduction which part of mango is fleshy |
| A. | pericarp |
| B. | receptacle |
| C. | placenta |
| D. | funiculus |
| Answer» B. receptacle | |
| 38. |
Pine is a |
| A. | flowering tree |
| B. | cones |
| C. | conifer |
| D. | leaf |
| Answer» D. leaf | |
| 39. |
In a damp environment, cobalt chloride (COCl₂) paper can be replaced with |
| A. | cobalt cyanide |
| B. | cobalt carbide |
| C. | cobalt thiocyanate |
| D. | cobalt chlorate |
| Answer» D. cobalt chlorate | |
| 40. |
Features of 'Clitoria Style do not include |
| A. | wavy |
| B. | short |
| C. | curved |
| D. | long |
| Answer» C. curved | |
| 41. |
Shoot apical meristems generate which of following structures in plants? |
| A. | leaves |
| B. | stem |
| C. | roots |
| D. | thorns |
| Answer» B. stem | |
| 42. |
Which of following is an example of a Liverwort? |
| A. | marchantia |
| B. | amoeba |
| C. | red algae |
| D. | sphagnum |
| Answer» B. amoeba | |
| 43. |
In plants, Calyx is the |
| A. | outermost whorl of all flowering plants |
| B. | brightly colored part of a flower |
| C. | collection of sepals |
| D. | collection of petals only |
| Answer» D. collection of petals only | |
| 44. |
In photosynthesis, carbon dioxide (CO₂) must first be converted into |
| A. | glucose |
| B. | sugars |
| C. | peptones |
| D. | galactose |
| Answer» C. peptones | |
| 45. |
Energy of a photon and light wavelength are |
| A. | always same |
| B. | sometimes same |
| C. | directly proportionate |
| D. | inversely proportionate |
| Answer» E. | |
| 46. |
Egg cell is also referred to as |
| A. | mature ovule |
| B. | ovum |
| C. | haploid male gamete |
| D. | diploid ovule |
| Answer» C. haploid male gamete | |
| 47. |
Pollens have rough surfaces in plants pollinated by |
| A. | wind |
| B. | insects |
| C. | water |
| D. | rain |
| Answer» C. water | |
| 48. |
Dry mass of germinating seed increases when the |
| A. | water is absorbed |
| B. | cotyledons are shed |
| C. | foliage leaves become photosynthetic |
| D. | water is released by the seed |
| Answer» D. water is released by the seed | |
| 49. |
The purpose of bracts include |
| A. | protection of stamen |
| B. | protection of stigma |
| C. | enclosure of flowers |
| D. | enclosure of sepals |
| Answer» D. enclosure of sepals | |
| 50. |
Organisms respond to stimuli i.e. |
| A. | external |
| B. | internal |
| C. | uniternal |
| D. | central |
| Answer» D. central | |