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.
| 201. |
Dioecious plant has |
| A. | male and female flowers on same plant |
| B. | male and female flowers on separate plants |
| C. | only male flower |
| D. | only female flower |
| Answer» C. only male flower | |
| 202. |
Sponge bone comprises of cells |
| A. | osteoblast |
| B. | osteocyte |
| C. | osteoclast |
| D. | All of the Above |
| Answer» E. | |
| 203. |
Starch is commonly formed and stored in |
| A. | animals |
| B. | plants |
| C. | fish |
| D. | insects |
| Answer» C. fish | |
| 204. |
In earthworm, fluid filled compartments are separated by |
| A. | lumps |
| B. | septa |
| C. | nephrostome |
| D. | webs |
| Answer» C. nephrostome | |
| 205. |
Excess amino acids are stored as |
| A. | seeds |
| B. | stem tubers |
| C. | proteins |
| D. | corms |
| Answer» D. corms | |
| 206. |
Reproductive nuclei of flower are known as |
| A. | male gametes |
| B. | female gametes |
| C. | male gonads |
| D. | female gonads |
| Answer» B. female gametes | |
| 207. |
In plants ,Transpiration helps |
| A. | leaves to become cool only |
| B. | only to prevents leaves being scorched by sun |
| C. | to absorb water |
| D. | leaves to become cool and prevents leaves being scorched by sun |
| Answer» E. | |
| 208. |
Flowers of grass are |
| A. | may be scented |
| B. | usually scentless |
| C. | always scented |
| D. | mostly multicolored |
| Answer» C. always scented | |
| 209. |
Enzymes to break down food reserves are produced through |
| A. | Plumule |
| B. | radical |
| C. | testa |
| D. | cotyledons |
| Answer» E. | |
| 210. |
Lack of dispersal mechanism leads to the |
| A. | production of daughter plants exactly identical to parent plant |
| B. | causes overcrowding and competition for light and water |
| C. | growth of plant in a suitable environment |
| D. | no possibility of fertilization |
| Answer» C. growth of plant in a suitable environment | |
| 211. |
Light absorbed by chlorophyll is converted into |
| A. | light energy |
| B. | autotrophic energy |
| C. | chemical energy |
| D. | kinetic energy |
| Answer» D. kinetic energy | |
| 212. |
Examples of Epigeal germination include |
| A. | maize |
| B. | sword bean seed |
| C. | broad bean seed |
| D. | pea |
| Answer» C. broad bean seed | |
| 213. |
Peas and beans split along the |
| A. | pericarp |
| B. | sutures |
| C. | micropyle |
| D. | radicle |
| Answer» C. micropyle | |
| 214. |
Pests may be not be destroyed through |
| A. | Parasites |
| B. | Insecticides |
| C. | Herbicides |
| D. | Pesticides |
| Answer» B. Insecticides | |
| 215. |
Endoskeleton is made up of |
| A. | bones |
| B. | cartilage |
| C. | muscles |
| D. | Both a and b |
| Answer» E. | |
| 216. |
Word tropic is a Greek word in which 'Tropos' mean |
| A. | elongated |
| B. | turn |
| C. | straight |
| D. | zigzag |
| Answer» C. straight | |
| 217. |
In legumes, the explosive mechanism is the shrinking of |
| A. | pericarp |
| B. | husk |
| C. | micropyle |
| D. | radicle |
| Answer» B. husk | |
| 218. |
Roots response towards gravity is display of |
| A. | positive geotropism |
| B. | negative geotropism |
| C. | neutral geotropism |
| D. | static geotropism |
| Answer» B. negative geotropism | |
| 219. |
Branches of leaf veins end in |
| A. | upper epidermis |
| B. | lower epidermis |
| C. | mesophyll cells |
| D. | none of others |
| Answer» D. none of others | |
| 220. |
Loss of excess water is called as |
| A. | transpiration |
| B. | translocation |
| C. | energy lost in active transport |
| D. | energy lost in protecting stomata |
| Answer» B. translocation | |
| 221. |
Competition for food and light can be reduced through |
| A. | proper plantation of seeds |
| B. | proper seed dispersal |
| C. | overcrowding of species in a certain area |
| D. | Epigeal germination |
| Answer» C. overcrowding of species in a certain area | |
| 222. |
Excess sugars (CₙH₂ₘOₘ) are changed in form of |
| A. | complex sugars |
| B. | disaccharides |
| C. | cellulose |
| D. | starch |
| Answer» E. | |
| 223. |
Female gametophyte develops into an egg after germination with healthy megaaspore and produce |
| A. | embryo |
| B. | ova |
| C. | seed |
| D. | fruit |
| Answer» B. ova | |
| 224. |
In reproduction of plants, function of lodicules is to help |
| A. | stigma emerge |
| B. | anthers emerge |
| C. | sepals emerge |
| D. | emerge of pollens |
| Answer» D. emerge of pollens | |
| 225. |
As soon as seeds are shed, it is essential that before seed germination, seeds |
| A. | must be soaked in water |
| B. | must be shed at proper place |
| C. | have undergone a dormant period |
| D. | are non-viable |
| Answer» D. are non-viable | |
| 226. |
Early vascular plants lacked true leaves and |
| A. | roots |
| B. | shoots |
| C. | fruits |
| D. | stem |
| Answer» B. shoots | |
| 227. |
Functions of pancreas does not include |
| A. | secretion of insulin |
| B. | utilization of carbohydrates |
| C. | deamination of amino acids |
| D. | production of enzymes |
| Answer» D. production of enzymes | |
| 228. |
Which of following is an example of a moss? |
| A. | sphagnum |
| B. | marchantia |
| C. | amoeba |
| D. | red algae |
| Answer» B. marchantia | |
| 229. |
Starch (C₆H₁₀O₅)n is a most common storage form of |
| A. | lipids |
| B. | fats |
| C. | amino acids |
| D. | carbohydrates |
| Answer» E. | |
| 230. |
Internal structure of stem lacks |
| A. | xylem |
| B. | phloem |
| C. | pith |
| D. | cortex |
| Answer» D. cortex | |
| 231. |
Ovary, style, and stigma form the |
| A. | calyx of the flower |
| B. | corolla of the flower |
| C. | carpel of the flower |
| D. | androecium of the flower |
| Answer» D. androecium of the flower | |
| 232. |
Common example of stem tuber is |
| A. | Ginger |
| B. | Garlic |
| C. | Onion |
| D. | Potato |
| Answer» E. | |
| 233. |
Specialized covering around megasporangium are called |
| A. | integuments |
| B. | sperms |
| C. | ovum |
| D. | ovary |
| Answer» B. sperms | |
| 234. |
Fertilization in young sporophyte which is first attached to gametophyte later becomes |
| A. | mutated |
| B. | indepdent |
| C. | fertilized |
| D. | developed |
| Answer» C. fertilized | |
| 235. |
Ropes are made from leaves of |
| A. | Saccharum munja |
| B. | sacchrum |
| C. | bambusa |
| D. | citratus |
| Answer» B. sacchrum | |
| 236. |
A dry, indehicent fruit in which pericarp is completely fused with seedcoat is called |
| A. | pulses |
| B. | grams |
| C. | rice |
| D. | sugar |
| Answer» C. rice | |
| 237. |
Which of following is produced by Megasporangia on megasporophylls? |
| A. | Strobill |
| B. | sori |
| C. | female gametophyte |
| D. | male gametophyte |
| Answer» D. male gametophyte | |
| 238. |
Dominant diploid sporophyle generation alternates with inconspicuous haploid gametophyte gerperation, it is pattern of cycle of |
| A. | pinus |
| B. | cones |
| C. | pine |
| D. | all of these |
| Answer» B. cones | |
| 239. |
Concentration gradient allows water and minerals to diffuse due to |
| A. | osmosis |
| B. | active transport |
| C. | diffusion |
| D. | reverse osmosis |
| Answer» B. active transport | |
| 240. |
Garlic is an example of |
| A. | rhizome |
| B. | corm |
| C. | stem tuber |
| D. | bulb |
| Answer» E. | |
| 241. |
Chemotropism response is seen in |
| A. | hyphal |
| B. | fungi |
| C. | virus |
| D. | bacteria |
| Answer» D. bacteria | |
| 242. |
Internal hydrostatic pressure produced by osmosis is called |
| A. | turgor pressure |
| B. | air pressure |
| C. | water pressure |
| D. | hydrolic pressure |
| Answer» B. air pressure | |
| 243. |
Procuticle is further hardened by |
| A. | sclerotization |
| B. | calcium carbonate |
| C. | magnesium sulfate |
| D. | Both a and b |
| Answer» D. Both a and b | |
| 244. |
How many total plant phyla are there? |
| A. | 1 |
| B. | 4 |
| C. | 7 |
| D. | 10 |
| Answer» E. | |
| 245. |
Dry mass of germinating seed decreases due to |
| A. | heat loss |
| B. | active tissue respiration |
| C. | absorption of water |
| D. | photosynthesis |
| Answer» C. absorption of water | |
| 246. |
Shedding of exoskeleton to replace it due to growth in body is termed as |
| A. | moulting |
| B. | ecdysis |
| C. | molding |
| D. | Both a and b |
| Answer» E. | |
| 247. |
Pollen grains are received through |
| A. | stigma |
| B. | style |
| C. | ovary |
| D. | pistil of the flower |
| Answer» B. style | |
| 248. |
Sessile flowers don't have |
| A. | scent |
| B. | irregular shape |
| C. | pedicles |
| D. | petals |
| Answer» D. petals | |
| 249. |
Another vital function of cambium cork is formation of tissues over a wound called |
| A. | heart wood |
| B. | sap wood |
| C. | callus |
| D. | bark |
| Answer» D. bark | |
| 250. |
If a substance accumulates in a body for a long time, it will be |
| A. | passed out through egestion |
| B. | passed out through excretion |
| C. | become insoluble in water |
| D. | passed on to next consumer in food chain |
| Answer» E. | |