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.
| 301. |
Major different between animal and plant is in their |
| A. | digestion |
| B. | respiration |
| C. | locomotion |
| D. | egestion |
| Answer» D. egestion | |
| 302. |
How many spores a single moss can generate? |
| A. | 1 million |
| B. | 50 million |
| C. | 500 million |
| D. | 5 million |
| Answer» C. 500 million | |
| 303. |
Class of angiosperm which contain two cotyledon are called |
| A. | monocotyledons |
| B. | dicotyledons |
| C. | tricotyledons |
| D. | multicotyledons |
| Answer» C. tricotyledons | |
| 304. |
After fats and glycogen (C₂₄H₄₂O₂₁) are consumed in case of starvation, the next nutrient to be consumed is |
| A. | proteins |
| B. | starch |
| C. | cellulose |
| D. | adenosine triphosphate |
| Answer» B. starch | |
| 305. |
Nitrogen, phosphorus and sulphur are the examples of |
| A. | essential non-metallic elements |
| B. | essential metallic elements |
| C. | non-essential non-metallic elements |
| D. | non-essential metallic elements |
| Answer» B. essential metallic elements | |
| 306. |
Horsetail plants are also known as |
| A. | Anthrophytes |
| B. | bryophytes |
| C. | sporophytes |
| D. | sori |
| Answer» B. bryophytes | |
| 307. |
Whisk ferns belong to which genus? |
| A. | Psilotum |
| B. | Byram |
| C. | Riccia |
| D. | Porella |
| Answer» B. Byram | |
| 308. |
Period of dormancy for seeds of desert plants can be upto |
| A. | few weeks |
| B. | few months |
| C. | 5-10 years |
| D. | 15 years |
| Answer» E. | |
| 309. |
Which of following are small pores that allow gas exchange in plants? |
| A. | plasmodesmata |
| B. | stomata |
| C. | nuclear pores |
| D. | spores |
| Answer» C. nuclear pores | |
| 310. |
Color of the keel petals in Clitoria flower is |
| A. | bright purple |
| B. | green |
| C. | yellowish green |
| D. | yellow |
| Answer» D. yellow | |
| 311. |
Piliferous layer is found in the zone of |
| A. | cell multiplication |
| B. | cell elongation |
| C. | cell maturation |
| D. | all of above |
| Answer» D. all of above | |
| 312. |
In sage, chances of self pollination are reduced due to the fact that the |
| A. | plant has unisexual flowers |
| B. | stigmas do not receive the pollens from the same flowers |
| C. | distance between the stigma and anther is more |
| D. | plant only contains stigma in some flowers |
| Answer» D. plant only contains stigma in some flowers | |
| 313. |
Sclerenchymatous cells are heavily lignified cells in |
| A. | xylem |
| B. | phloem |
| C. | cortex |
| D. | cuticle |
| Answer» B. phloem | |
| 314. |
Which of following is a multicellular diploid formed from mitotic division of zygote? |
| A. | gamete |
| B. | sporophyte |
| C. | gametophyte |
| D. | spore |
| Answer» C. gametophyte | |
| 315. |
Cambium can be easily located |
| A. | alternating with xylem |
| B. | alternating with phloem |
| C. | between the xylem and phloem |
| D. | in the center of vascular bundles |
| Answer» D. in the center of vascular bundles | |
| 316. |
Capillary action plays a pert in upward movement of water in |
| A. | pith cells |
| B. | epidermis cells |
| C. | woody trees |
| D. | small plants |
| Answer» E. | |
| 317. |
First step in seed germination is |
| A. | passing through the gut of an animal |
| B. | exploding along the sutures |
| C. | absorption of water |
| D. | taking in of O₂ |
| Answer» D. taking in of O₂ | |
| 318. |
Post fertilization, pericarp gets developed from |
| A. | fruit |
| B. | ovary wall |
| C. | ovule |
| D. | funicle |
| Answer» C. ovule | |
| 319. |
Starch formation can occur in |
| A. | roots |
| B. | stem |
| C. | leaves |
| D. | phloem |
| Answer» B. stem | |
| 320. |
Sugars made in leaves is transported through |
| A. | mesophyll cells |
| B. | lower epidermis |
| C. | xylem tissues |
| D. | phloem tissues |
| Answer» E. | |
| 321. |
Sensory receptors of exoskeleton are called as |
| A. | sensilla |
| B. | bristles |
| C. | lenses |
| D. | effectors |
| Answer» B. bristles | |
| 322. |
Leaf stalk enables in rapid |
| A. | diffusion of carbon dioxide |
| B. | diffusion of maximum sunlight |
| C. | loss of water |
| D. | conversion of physical energy in chemical energy |
| Answer» C. loss of water | |
| 323. |
Which of following plants are generally called 'Mormon tree'? |
| A. | ephedra |
| B. | Welwitschia |
| C. | Gnetum |
| D. | hornworts |
| Answer» B. Welwitschia | |
| 324. |
Structure of a sporophyte consists of a foot, seta and |
| A. | vacoule |
| B. | cell membrane |
| C. | cell wall |
| D. | capsule |
| Answer» E. | |
| 325. |
Carbon dioxide (CO₂) taken in night is stored in form of |
| A. | dark energy |
| B. | chemical energy |
| C. | physical energy |
| D. | carbon monoxide |
| Answer» C. physical energy | |
| 326. |
Ability to withstand fluctuations in salt concentration is more in |
| A. | fresh water organisms |
| B. | sea water organisms |
| C. | brackish water organisms |
| D. | muddy water organisms |
| Answer» D. muddy water organisms | |
| 327. |
Arrangements of vascular bundles are effective to |
| A. | wind stress |
| B. | weight bearing ability |
| C. | pressure |
| D. | heat |
| Answer» C. pressure | |
| 328. |
To carry out insect-pollination, the flower must not be |
| A. | small |
| B. | large |
| C. | scented |
| D. | brightly colored |
| Answer» B. large | |
| 329. |
Period of dormation may be |
| A. | days |
| B. | weeks |
| C. | years |
| D. | varies as per the species |
| Answer» E. | |
| 330. |
In plants epicalyx is found in |
| A. | when there is no calyx |
| B. | covering outer to calyx |
| C. | non-floral leaves |
| D. | covering inner to calyx |
| Answer» C. non-floral leaves | |
| 331. |
In plants, epicalyx in clitoria is |
| A. | absent |
| B. | may be 2 |
| C. | may be 4 |
| D. | more than 4 |
| Answer» C. may be 4 | |
| 332. |
Number of petals in Clitoria flowers are |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» C. 6 | |
| 333. |
Protein that is deposited on epidermis is |
| A. | Collagen |
| B. | Keratin |
| C. | Elastin |
| D. | all of above |
| Answer» C. Elastin | |
| 334. |
Liverworts belong to which of following phylum? |
| A. | Anthocerophyta |
| B. | bryophyta |
| C. | Hepatophyta |
| D. | gymnosperms |
| Answer» D. gymnosperms | |
| 335. |
Each pollen grain forms |
| A. | one haploid male gamete |
| B. | two haploid male gametes |
| C. | one diploid male gamete |
| D. | two diploid male gametes |
| Answer» C. one diploid male gamete | |
| 336. |
Liver-worts, mosses, ferns move towards archegonia following stimulus of |
| A. | heat |
| B. | nucleic acid |
| C. | spores |
| D. | chloroplast |
| Answer» C. spores | |
| 337. |
Which of following term is used to refer to land plants? |
| A. | Embryophytes. |
| B. | sporophytes |
| C. | placenta |
| D. | gametophyte |
| Answer» B. sporophytes | |
| 338. |
Pollens are large, sticky and heavy in plants pollinated by |
| A. | wind |
| B. | insects |
| C. | water |
| D. | rain |
| Answer» C. water | |
| 339. |
Spontaneous movements which occur as a result of internal causes are called |
| A. | paratonic |
| B. | autonomic |
| C. | turgor |
| D. | growth |
| Answer» C. turgor | |
| 340. |
Epicuticle in exoskeleton is made up of |
| A. | lipoprotein |
| B. | chitin |
| C. | polysaccharide |
| D. | fructolipase |
| Answer» B. chitin | |
| 341. |
The light-dependent stage cannot be carried out without |
| A. | oxygen |
| B. | carbon dioxide |
| C. | water |
| D. | carbon monoxide |
| Answer» D. carbon monoxide | |
| 342. |
When exposed to damp air, the cobalt chloride (COCl₂) paper turns to |
| A. | pink |
| B. | buff |
| C. | blue |
| D. | green |
| Answer» B. buff | |
| 343. |
Roses can grow successfully if stock and scion are of the |
| A. | related species |
| B. | different species |
| C. | different groups |
| D. | similar class |
| Answer» B. different species | |
| 344. |
Examples of winged fruits include |
| A. | angsana |
| B. | tridex |
| C. | Tacoma |
| D. | cotton |
| Answer» B. tridex | |
| 345. |
What is association between a plant and fungi called? |
| A. | mycorrhizae |
| B. | commensalism |
| C. | parasitism |
| D. | photosynthesis |
| Answer» B. commensalism | |
| 346. |
Which of following is a sticky structure that receives pollen? |
| A. | pistil |
| B. | ovum |
| C. | anther |
| D. | stigma |
| Answer» E. | |
| 347. |
Which of following enclose flowers before it opens? |
| A. | petals |
| B. | sepals |
| C. | leaves |
| D. | stem |
| Answer» C. leaves | |
| 348. |
Sensilla are specialized modification of exoskeleton for exchange of |
| A. | body fluid |
| B. | gases |
| C. | nitrogenous waste |
| D. | oxygen |
| Answer» C. nitrogenous waste | |
| 349. |
Cells which are present in seed coats and nut shells which provide protection are |
| A. | fibers |
| B. | tracheids |
| C. | sclereides |
| D. | vessels |
| Answer» D. vessels | |
| 350. |
Which of following protects pollen from harsh winds as it travels? |
| A. | lignin |
| B. | chitin |
| C. | proteins |
| D. | Sporopollenin |
| Answer» E. | |