MCQOPTIONS
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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 6201. |
Rachis is modified into a leafy structure called |
| A. | Phyllode |
| B. | Ochrea |
| C. | Phylloclade |
| D. | Phyllome |
| Answer» B. Ochrea | |
| 6202. |
In Calotropis the phyllotaxy is |
| A. | Alternate |
| B. | Verticellate |
| C. | Opposite and superposed |
| D. | Opposite and decussate |
| Answer» E. | |
| 6203. |
Phyllode is an adaptation to |
| A. | Heterophylly environment |
| B. | Halophytic environment |
| C. | Mesophytic environment |
| D. | Xerophytic environment |
| Answer» E. | |
| 6204. |
A unifoliate compound leaf can be differentiated from simple leaf in having |
| A. | Joint |
| B. | Stalk |
| C. | Unicostate reticulate venation |
| D. | Multicostate reticulate venation |
| Answer» B. Stalk | |
| 6205. |
In spiral phyllotaxy, the number of leaves at each node is |
| A. | One |
| B. | Two |
| C. | Many |
| D. | Three |
| Answer» B. Two | |
| 6206. |
Anisophylly is |
| A. | Different types of leaves on the same plant |
| B. | Unequal sized opposite leaves |
| C. | Presence of lobed and entire leaves |
| D. | Leaves with unequal sized basal and terminal leaflets |
| Answer» C. Presence of lobed and entire leaves | |
| 6207. |
A phyllotaxy with two or more leaves present on the same node is |
| A. | Opposite |
| B. | Verticillate |
| C. | Whorled |
| D. | Cyclic |
| Answer» D. Cyclic | |
| 6208. |
In Tamarind (Imli) the pinnate leaf is [Bihar PMT 1994] |
| A. | Tripinnate |
| B. | Bipinnate |
| C. | Paripinnate |
| D. | Imparipinnate |
| Answer» D. Imparipinnate | |
| 6209. |
Unicostate venation is called as |
| A. | Palmate |
| B. | Pinnate |
| C. | Reticulate |
| D. | Parallel |
| Answer» C. Reticulate | |
| 6210. |
The leaf of Mimosa pudica is |
| A. | Simple |
| B. | Bifoliate |
| C. | Bipinnate |
| D. | Trifoliate |
| Answer» D. Trifoliate | |
| 6211. |
Unifoliate compound leaf is found in |
| A. | Mango |
| B. | Citrus |
| C. | Asparagus |
| D. | Pea |
| Answer» C. Asparagus | |
| 6212. |
Arrangement of floral leaves in a floral bud is called [Pb. PMT 1997] |
| A. | Vernation |
| B. | Prefoliation |
| C. | Aestivation |
| D. | Ptyxis |
| Answer» B. Prefoliation | |
| 6213. |
The phyllotaxy in which two leaves arise from a bud at each node is |
| A. | Whorled |
| B. | Alternate |
| C. | Opposite |
| D. | None of these |
| Answer» D. None of these | |
| 6214. |
Rachis is present in |
| A. | Pinnate compound leaf |
| B. | Palmate compound leaf |
| C. | Both correct |
| D. | Both wrong |
| Answer» B. Palmate compound leaf | |
| 6215. |
When petiole bears leaflets at its tip, it is a |
| A. | Simple leaf |
| B. | Pinnate compound leaf |
| C. | Palmate compound leaf |
| D. | Isobilateral leaf |
| Answer» D. Isobilateral leaf | |
| 6216. |
Leaf is |
| A. | Exogenous lateral outgrowth |
| B. | Endogenous lateral outgrowth |
| C. | Superficial dorsal outgrowth |
| D. | Vascular lateral growth |
| Answer» B. Endogenous lateral outgrowth | |
| 6217. |
In Ficus (Rubber plant) the young leaves are protected by reddish structures called bud scales. These are |
| A. | Stipules |
| B. | Scales |
| C. | Bracts |
| D. | Bracteols |
| Answer» B. Scales | |
| 6218. |
Finely dissected leaves occur in [CPMT 1991] |
| A. | Free floating plants |
| B. | Rooted floating leaved plants |
| C. | Submerged plants |
| D. | Emerged plants |
| Answer» D. Emerged plants | |
| 6219. |
Leaves of which plant are economically important |
| A. | Coffee |
| B. | Tea |
| C. | Ocimum |
| D. | Palms |
| Answer» C. Ocimum | |
| 6220. |
Heterophylly has |
| A. | Morphological significance |
| B. | Adaptive significance |
| C. | Anatomical significance |
| D. | None of these |
| Answer» C. Anatomical significance | |
| 6221. |
Leaf of marigold is |
| A. | Simple |
| B. | Pinnately compound |
| C. | Bipinnately compound |
| D. | Decompound |
| Answer» B. Pinnately compound | |
| 6222. |
Main photosynthetic organs of Lathyrus sativus plant are |
| A. | Leaves |
| B. | Leaflets |
| C. | Stipules |
| D. | Phyllodes |
| Answer» D. Phyllodes | |
| 6223. |
Tongue like out growth in the leaf of grasses is |
| A. | Stipule |
| B. | Plumule |
| C. | Ligule |
| D. | Scutellum |
| Answer» D. Scutellum | |
| 6224. |
Quadrifoliate palmate compound leaf is found in |
| A. | Trigonella |
| B. | Trifolium |
| C. | Marsilea |
| D. | Bombax |
| Answer» D. Bombax | |
| 6225. |
When incision in a leaf is more than half way towards the midrib it is called |
| A. | Pinnatisect |
| B. | Pinnatipartite |
| C. | Pinnatifid |
| D. | Palmatipartite |
| Answer» C. Pinnatifid | |
| 6226. |
Phyllode of Acacia auriculiformis is a leaf modification because |
| A. | It does not arise in the axil of a leaf |
| B. | It bears a bud in its axil |
| C. | It is vertical in position and reduces transpiration |
| D. | All of these |
| Answer» E. | |
| 6227. |
Leaves fall off from branches in winter due to [CPMT 1977, 84] |
| A. | Formation of abscission layer |
| B. | Shortening of day length |
| C. | Fall in temperature |
| D. | All the above |
| Answer» B. Shortening of day length | |
| 6228. |
Axillary bud and stipules are absent in |
| A. | Simple leaves |
| B. | Leaflets |
| C. | Cauline leaves |
| D. | Ramal leaves |
| Answer» C. Cauline leaves | |
| 6229. |
1/3 spiral phyllotaxy (called Tristichous) means |
| A. | 3 rows of alternate rows |
| B. | In one circle, there are 3 leaves |
| C. | The angular divergence between 2 leaves is |
| D. | All of these |
| Answer» E. | |
| 6230. |
When leaves bear flower or inflorescence in their axil, they are called |
| A. | Cotyledonary leaves (Scutellum) |
| B. | Bract leaves (Hypsophylls) |
| C. | Scale leaves (Cataphylls) |
| D. | Floral leaves (Sporophylls) |
| Answer» C. Scale leaves (Cataphylls) | |
| 6231. |
Leaflets are called Pinnules in |
| A. | Twice pinnately compound leaf |
| B. | Once pinnately compound leaf |
| C. | Thrice pinnately compound leaf |
| D. | Decompound leaf |
| Answer» B. Once pinnately compound leaf | |
| 6232. |
Swollen spongy petiole is present in [APMEE 1996] |
| A. | Hydrilla |
| B. | Eichhornia |
| C. | Ruppia |
| D. | Pistia |
| Answer» C. Ruppia | |
| 6233. |
Which part of leaf shows venation |
| A. | Vagina |
| B. | Mesopodium |
| C. | Epipodium |
| D. | Leaflet |
| Answer» D. Leaflet | |
| 6234. |
Petiole is modified into tendril in [AFMC 1996; Orissa JEE 2000] |
| A. | Passiflora |
| B. | Gloriosa |
| C. | Pisum |
| D. | Clematis |
| Answer» E. | |
| 6235. |
A monocot can be distinguished from a dicot by [AFMC 1983] |
| A. | Phyllotaxy |
| B. | Aestivation |
| C. | Venation |
| D. | Vernation |
| Answer» D. Vernation | |
| 6236. |
Main function of leaf is [APMEE 1981] |
| A. | Manufacture of food |
| B. | Nerve impulse conduction |
| C. | Increasing grandeur |
| D. | Exchange of gases |
| Answer» B. Nerve impulse conduction | |
| 6237. |
A leaf is identified from [JKCMEE 1999] |
| A. | Flat green lamina |
| B. | Presence of leaf blade and petiole |
| C. | Presence of axillary bud |
| D. | Occurrence of chlorophyll |
| Answer» D. Occurrence of chlorophyll | |
| 6238. |
Onion stores food in [CPMT 1980] |
| A. | Underground stem |
| B. | Fleshy scales |
| C. | Root |
| D. | Shoot |
| Answer» C. Root | |
| 6239. |
Adnate stipules occur in [CPMT 1986] |
| A. | China Rose |
| B. | Gardenia |
| C. | Rose |
| D. | Cotton |
| Answer» D. Cotton | |
| 6240. |
Tendrillar stipules occur in [CPMT 1986, 89, 91; DPMT 1999] |
| A. | Dolichos lablab |
| B. | Acacia |
| C. | Smilax |
| D. | Mango |
| Answer» D. Mango | |
| 6241. |
Phyllotaxis is [AIIMS 1996; APMEE 1999; Kerala CET 2002] |
| A. | Mode of leaf arrangement on stem |
| B. | Types of roots |
| C. | Arrangement of sepals and petals in a flower |
| D. | Type of ovary |
| Answer» B. Types of roots | |
| 6242. |
Storage leaves occur in [MP PMT 1987] |
| A. | Allium |
| B. | Zizyphus |
| C. | Triticum |
| D. | Trapa |
| Answer» B. Zizyphus | |
| 6243. |
A simple leaf is present in [Bihar PMT 1980] |
| A. | Peepal |
| B. | Mimosa |
| C. | Neem |
| D. | All of these |
| Answer» B. Mimosa | |
| 6244. |
Imparipinnate leaf is the one where [CPMT 1991] |
| A. | Leaflets are borne in pairs |
| B. | Leaflets are small |
| C. | Leaflets are large |
| D. | Rachis is terminated by an odd leaflet |
| Answer» E. | |
| 6245. |
In sweet pea, the tendrils are modified [JIPMER 2000; RPMT 2002] |
| A. | Stem branches |
| B. | Leaflets |
| C. | Leaves |
| D. | Stipules |
| Answer» C. Leaves | |
| 6246. |
Swollen lower end of leaf stalk is [Wardha 2000] |
| A. | Petiole |
| B. | Pulvinus |
| C. | Thalamus |
| D. | Disc |
| Answer» C. Thalamus | |
| 6247. |
In Lathyrus aphaca, the leaves are modified into [AIIMS 1997] |
| A. | Spine |
| B. | Tendril |
| C. | Scale |
| D. | Stem-like structure |
| Answer» C. Scale | |
| 6248. |
Free lateral stipules occur in [AMU 1986, 89, 1999] |
| A. | Mango / Mangifera |
| B. | Maize / Zea |
| C. | Rice / Oryza |
| D. | China Rose / Hibiscus |
| Answer» E. | |
| 6249. |
Most popular example of Lamarck is |
| A. | African Giraffe |
| B. | Snakes |
| C. | Both (a) and (b) |
| D. | Primose |
| Answer» D. Primose | |
| 6250. |
A scientist kept 72 generations of Drosophila in darkness. Even after that the first flies had normal eyes. This disapproves the theory of [DPMT 1985, 86] |
| A. | Natural selection |
| B. | Acquired characters |
| C. | Use and disuse |
| D. | Synthetic theory |
| Answer» C. Use and disuse | |