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.
| 4201. |
Assimilatory power refers to [JIPMER 1990; BHU 1983; AFMC 1994] |
| A. | Generation of\[ATP\]and\[NADP{{H}_{2}}\] |
| B. | Reduction of\[C{{O}_{2}}\] |
| C. | Splitting of water |
| D. | Disintegration of plastids |
| Answer» B. Reduction of\[C{{O}_{2}}\] | |
| 4202. |
During photosynthesis [NCERT 1978; MP PMT 1990; CPMT 1998, 2003; Pb. PMT 2000, 03] |
| A. | Both\[C{{O}_{2}}\]and water get oxidized |
| B. | Both\[C{{O}_{2}}\]and water get reduced |
| C. | Water is reduced and\[C{{O}_{2}}\]is oxidized |
| D. | Carbon dioxide gets reduced and water get oxidised |
| Answer» E. | |
| 4203. |
Which of the following is the bye-product of photosynthesis |
| A. | Potential energy |
| B. | Energy |
| C. | Carbon dioxide |
| D. | Oxygen |
| Answer» E. | |
| 4204. |
The percentage of light energy utilized for photosynthesis by higher plants is [CPMT 1972, 91; BHU 1979; RPMT 1990] |
| A. | 100% |
| B. | 50 % |
| C. | 10% |
| D. | 1 to 2% |
| Answer» E. | |
| 4205. |
Ribulose diphosphate carboxylase oxygenase is located in [BHU 1989] |
| A. | Mitochondria |
| B. | Choloroplasts |
| C. | Peroxisomes |
| D. | Golgi bodies |
| Answer» C. Peroxisomes | |
| 4206. |
Chemosynthesis and photosynthesis are alike in that both [CPMT 1988] |
| A. | Are associated with heterotroph |
| B. | Require sunlight as an energy source |
| C. | Methods of autotrophic nutrition |
| D. | Occur in tracheaphytes |
| Answer» D. Occur in tracheaphytes | |
| 4207. |
Wavelength of green light is [BHU 1982] |
| A. | \[400-500m\mu \] |
| B. | \[500-550m\mu \] |
| C. | \[660-720m\mu \] |
| D. | \[720-800m\mu \] |
| Answer» C. \[660-720m\mu \] | |
| 4208. |
The shade loving plants are called |
| A. | Heliophytes |
| B. | Sciophytes |
| C. | Chasmophytes |
| D. | None of the above |
| Answer» C. Chasmophytes | |
| 4209. |
All plastids have essentially same structure because [CBSE PMT 1992] |
| A. | They have to perform same function |
| B. | They are localized in aerial parts of plants |
| C. | All plastids store starch, lipid and proteins |
| D. | One type of plastid can be differentiated into another type of plastid depending on cell requirements |
| Answer» E. | |
| 4210. |
The synthesis of ATP in photosynthesis and respiration is essentially an oxidation-reduction process involving removal of energy from [CBSE PMT 1992; CPMT 1988] |
| A. | Oxygen |
| B. | Phytochrome |
| C. | Cytochrome |
| D. | Electrons |
| Answer» E. | |
| 4211. |
In presence of light, green plants convert carbon dioxide and water into food stuffs. Which of the following is likely to be the first substance that a green plant makes in photosynthesis |
| A. | A simple sugar |
| B. | Starch |
| C. | Cellulose |
| D. | Fat |
| Answer» B. Starch | |
| 4212. |
Which of the following is anabolic process |
| A. | Synthesis of carbohydrate |
| B. | Synthesis of fat |
| C. | Synthesis of protein |
| D. | All the above |
| Answer» E. | |
| 4213. |
85-90% of all photosynthesis of the world is carried out by [CPMT 1972, 79; DPMT 1989] |
| A. | Shrubs |
| B. | Herbs |
| C. | Oceanic algae |
| D. | Trees with large branches |
| Answer» D. Trees with large branches | |
| 4214. |
Photosynthesis is a process of |
| A. | Oxidation of food |
| B. | Manufacture of food |
| C. | Both [a] and [b] |
| D. | None of the above |
| Answer» C. Both [a] and [b] | |
| 4215. |
The starch is insoluble in water even than it is stored in potato in more quantity |
| A. | By microbes |
| B. | Because it is manufactured in tuber |
| C. | Because plants use it as food |
| D. | Because first it come to tuber as sugar solution then it is stored as starch |
| Answer» E. | |
| 4216. |
How much percentage of absorbed water is used in photosynthesis |
| A. | 1% |
| B. | 5% |
| C. | 10% |
| D. | 90% |
| Answer» B. 5% | |
| 4217. |
The plants growing in dark show yellowing in leaves and elongated internodes, this condition is called as [BHU 1999] |
| A. | Etiolation |
| B. | Chlorosis |
| C. | Dechlorosis |
| D. | Dark effect |
| Answer» B. Chlorosis | |
| 4218. |
Flagellar movements are controlled by |
| A. | Photosynthesis |
| B. | Contractile vacuoles |
| C. | Neuromotor apparatus |
| D. | Pyrenoids |
| Answer» D. Pyrenoids | |
| 4219. |
Phytoplankton consists of [AMU 1991] |
| A. | Non-vascular hydrophytes |
| B. | Aquatic algae and photosynthetic bacteria |
| C. | Micro-organisms functioning as decomposers |
| D. | Plant consuming animals and their remains |
| Answer» C. Micro-organisms functioning as decomposers | |
| 4220. |
If phytoplanktons are destroyed in the sea, then [BHU 1991] |
| A. | No effect will be seen |
| B. | Primary consumers will grow luxuriently |
| C. | It will effect the food chain |
| D. | Algae will get more space to grow |
| Answer» D. Algae will get more space to grow | |
| 4221. |
In Whittaker's five kingdom classification, unicellular eukaryotes primarily aquatic and having various cell organelles constitute [Chd. CET 1997] |
| A. | Monera |
| B. | Protista |
| C. | Animalia |
| D. | Plantae |
| Answer» C. Animalia | |
| 4222. |
Planktons are organisms which [JIPMER 1993] |
| A. | Float on water surface |
| B. | Are free swimmers |
| C. | Are deep sea forms |
| D. | Are burrowing forms |
| Answer» B. Are free swimmers | |
| 4223. |
The slime moulds are characterized by the presence of [MH-CET 2003; BHU 2004] |
| A. | Elaters |
| B. | Pseudoelaters |
| C. | Capillitium |
| D. | Capitulum |
| Answer» D. Capitulum | |
| 4224. |
Murein is not found in the cell wall of [KCET 2004] |
| A. | Nostoc |
| B. | Eubacteria |
| C. | Cyanobacteria |
| D. | Diatoms |
| Answer» E. | |
| 4225. |
Flagellum of Astasia/Euglena is [APMEE 2002] |
| A. | Pantonematic |
| B. | Acronematic |
| C. | Pantachronematic |
| D. | Stichonematic |
| Answer» E. | |
| 4226. |
Choose the photosynthetic protozoan from the following [KCET 1999; CPMT 2003] |
| A. | Euglena |
| B. | Amoeba |
| C. | Paramecium |
| D. | Plasmodium |
| Answer» B. Amoeba | |
| 4227. |
Gametic meiosis occurs in protists which are [Chd. CET 2002] |
| A. | Diploid |
| B. | Haploid |
| C. | Tetraploid |
| D. | Mesokaryotic |
| Answer» B. Haploid | |
| 4228. |
Ceratium is [APMEE 2002] |
| A. | Dinoflagellate |
| B. | Diatom |
| C. | Slime mould |
| D. | Sporozoan |
| Answer» B. Diatom | |
| 4229. |
Protista contains [Orissa JEE 2002] |
| A. | Euglena, Dinoflagellates and Yeast |
| B. | Amoeba, Paramaecium, Hydra |
| C. | Euglena, Paramaecium, Mushroom |
| D. | Amoeba, Paramaecium and Dinoflagellates |
| Answer» E. | |
| 4230. |
Which organism behaves like plants in the presence of light and absence of organic food, but in reverse conditions behaves like animals |
| A. | Archaebacteria |
| B. | Euglena |
| C. | Nostoc |
| D. | Paramecium |
| Answer» C. Nostoc | |
| 4231. |
Diatoms stay afloat due to [AMU 2001] |
| A. | Pseudopodia |
| B. | Flagella |
| C. | Stored lipids |
| D. | All the above |
| Answer» D. All the above | |
| 4232. |
Sexual reproduction in protists with diploid chromosomes involves [RPMT 1999; Chd. CET 2000] |
| A. | Cyst formation |
| B. | Zygotic meiosis |
| C. | Gametangial meiosis |
| D. | Binary fission |
| Answer» D. Binary fission | |
| 4233. |
Diatom frustule/shell is made of [BHU 1998; Manipal 2001] |
| A. | Silica |
| B. | Lime |
| C. | Magnesium carbonate |
| D. | Any of the above |
| Answer» B. Lime | |
| 4234. |
Which one of the following can photosynthesise its food [AMU 1989; JIPMER 1997; KCET 1999] |
| A. | Hydra |
| B. | Paramoecium |
| C. | Monocystis |
| D. | Euglena |
| Answer» E. | |
| 4235. |
Unlike other algae, diatoms do not readily decay due to [BHU 1999] |
| A. | Siliceous wall |
| B. | Mucilaginous wall |
| C. | Water proof cell wall |
| D. | Nonliving cells |
| Answer» B. Mucilaginous wall | |
| 4236. |
Characteristic spores of diatoms are [BHU 1982; KCET 1999; Kerala PMT 1999] |
| A. | Ascospores |
| B. | Basidiospores |
| C. | Auxospores |
| D. | Zoospores |
| Answer» D. Zoospores | |
| 4237. |
Protozoans are able to live efficiently due to their [AMU 1999] |
| A. | Motility |
| B. | Rapid reproduction |
| C. | Ability to manufacture food |
| D. | Specialised organelles |
| Answer» E. | |
| 4238. |
Euglena is a [CPMT 1998] |
| A. | Ciliate |
| B. | Sporozoan |
| C. | Flagellate |
| D. | Sarcodine |
| Answer» D. Sarcodine | |
| 4239. |
Unicellularity is characteristic of [AFMC 1997] |
| A. | Cyanobacteria |
| B. | Monera |
| C. | Protista |
| D. | All of these |
| Answer» D. All of these | |
| 4240. |
Which one is not a protozoan protist [Manipal 1995] |
| A. | Plasmodium vivax |
| B. | Paramecium caudatum |
| C. | Enterobius vermiclaris |
| D. | Trypanosoma gambiense |
| Answer» D. Trypanosoma gambiense | |
| 4241. |
Protists obtain food as [CBSE PMT 1994] |
| A. | Photosynthesisers, symbionts and holotrophs |
| B. | Photosynthesisers |
| C. | Chemosynthesisers |
| D. | Holotrophs |
| Answer» B. Photosynthesisers | |
| 4242. |
Which kingdom incorporates phytoplanktons and zooplanktons |
| A. | Protista |
| B. | Fungi |
| C. | Animalia |
| D. | Plantae |
| Answer» B. Fungi | |
| 4243. |
Which protist reproduces both by binary fission and conjugation [CPMT 1991; BHU 1994] |
| A. | Amoeba |
| B. | Paramecium |
| C. | Euglena |
| D. | Monocystis |
| Answer» C. Euglena | |
| 4244. |
Protistan genome has [CBSE PMT 1994] |
| A. | Membrane bound nucleoproteins embedded in cytoplasm |
| B. | Free nucleic acid aggregates |
| C. | Gene containing nucleoproteins condensed together in loose mass |
| D. | Nucleoprotein in direct contact with cell substance |
| Answer» B. Free nucleic acid aggregates | |
| 4245. |
Tranverse groove present in dinoflagellates is [Haryana PMT 1993] |
| A. | Sulcus |
| B. | Cingulum |
| C. | Annulus |
| D. | Both (b) and (c) |
| Answer» E. | |
| 4246. |
Spore producing body of a cellular slime mould is [Haryana PMT 1993] |
| A. | Pseudoplasmodium |
| B. | Plasmodium |
| C. | Sporangium |
| D. | Sporophore |
| Answer» D. Sporophore | |
| 4247. |
Slime moulds belong to [Haryana PMT 1993] |
| A. | Fungi |
| B. | Protista |
| C. | Monera |
| D. | Plantae |
| Answer» C. Monera | |
| 4248. |
Red oceanic tides can be due to [BHU 1986] |
| A. | Diatoms |
| B. | Dinophyceae |
| C. | Red algae |
| D. | Blue-green algae |
| Answer» C. Red algae | |
| 4249. |
Diatoms are [BHU 2000] |
| A. | Fungi |
| B. | Plantae |
| C. | Protista |
| D. | Protozoans |
| Answer» D. Protozoans | |
| 4250. |
Protista includes |
| A. | Protozoa, algae and fungi |
| B. | Algae, bryophyta, bacteria and fungi |
| C. | Fungi, slime moulds and vascular plants |
| D. | Protozoa, bacteria, algae and bryophyte |
| Answer» B. Algae, bryophyta, bacteria and fungi | |