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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.
| 8351. |
The sun loving plants are referred to as [CPMT 1998; Pb. PMT 1999] |
| A. | Halophytes |
| B. | Heliophytes |
| C. | Heterotrophs |
| D. | Sciophytes |
| Answer» C. Heterotrophs | |
| 8352. |
Which of the following is a climatic factor [Pune CET 1998] |
| A. | Oxygen |
| B. | Temperature |
| C. | Soil structure |
| D. | Altitude |
| Answer» C. Soil structure | |
| 8353. |
If carbon dioxide is withdrawn from the biosphere, which organism would first experience negative effects [MP PMT 1993] |
| A. | Primary producers |
| B. | Producers |
| C. | Secondary consumers |
| D. | Tertiary consumers |
| Answer» B. Producers | |
| 8354. |
Soil salinity is measured by [BHU 1995] |
| A. | Porometer |
| B. | Potometer |
| C. | Conductivity meter |
| D. | Calorimeter |
| Answer» D. Calorimeter | |
| 8355. |
Quantity of in the atmosphere is about [MP PMT 1991; CBSE PMT 1997; RPMT 1997] |
| A. | 0.00003 |
| B. | 0.0003 |
| C. | 0.003 |
| D. | 0.03 |
| Answer» C. 0.003 | |
| 8356. |
Maximum contribution of is from [CBSE PMT 1989] |
| A. | Phytoplankton |
| B. | Grasslands |
| C. | Herbs and shrubs |
| D. | Dense forests |
| Answer» B. Grasslands | |
| 8357. |
Ultraviolet radiation from sunlight cause the reaction that produce [CPMT 1982, 83; MP PMT 1988; CBSE PMT 1990] |
| A. | Carbon monoxide |
| B. | Sulphur dioxide |
| C. | Ozone |
| D. | Fluorides |
| Answer» D. Fluorides | |
| 8358. |
Plants grow sparsely in arid regions of the world [CPMT 1987] |
| A. | Only because of high temperature |
| B. | Because no seeds fall on their soil |
| C. | Because of several factors combining together |
| D. | Because the soil is sandy |
| Answer» E. | |
| 8359. |
Release of phosphates and nitrates in water bodies(i.e. rivers and lakes) lead to [AIIMS 1987] |
| A. | Increased algae growth |
| B. | Increased growth of decomposers |
| C. | Nutrient enrichment |
| D. | Reduced algae growth |
| Answer» D. Reduced algae growth | |
| 8360. |
One of the effects of dust is to cause [DPMT 1980] |
| A. | Opening of stomata |
| B. | Closure of stomata |
| C. | Coiling of leaves |
| D. | Yellowing of leaves |
| Answer» C. Coiling of leaves | |
| 8361. |
'Pedology' is the study of [BHU 1979] |
| A. | Soil |
| B. | Locomotion of animals |
| C. | Rocks |
| D. | Crop diseases |
| Answer» B. Locomotion of animals | |
| 8362. |
Mild grazing of plants by herbivores |
| A. | Retards growth |
| B. | Arrests growth |
| C. | Stimulates growth |
| D. | Destroys vegetation |
| Answer» D. Destroys vegetation | |
| 8363. |
Humus is |
| A. | A mixture of clay sand and loam |
| B. | Heavy soil with mineral salts |
| C. | Organic matter of colloidal size |
| D. | Light soil with lime |
| Answer» D. Light soil with lime | |
| 8364. |
Which of the following is an indirect ecological factor |
| A. | Temperature |
| B. | Soil structure |
| C. | Light |
| D. | Air |
| Answer» C. Light | |
| 8365. |
The major characteristics of the vegetation of a locality are controlled by |
| A. | Man only |
| B. | Mainly by climate |
| C. | Animals only |
| D. | Altitude of place only |
| Answer» C. Animals only | |
| 8366. |
Which of the following factors cannot be regarded as belonging to a non-living environment |
| A. | Light |
| B. | Temperature |
| C. | Interspecific competition |
| D. | Rainfall |
| Answer» D. Rainfall | |
| 8367. |
A characteristic which enables an organism to live in an environment is called |
| A. | Factor |
| B. | Ecotype |
| C. | Adaptation |
| D. | Ecosystem |
| Answer» D. Ecosystem | |
| 8368. |
If all the green plants were to disappears from the earth |
| A. | All the animals will die |
| B. | Only herbivorous will die |
| C. | Only carnivorous will die |
| D. | It will not matter to any animal |
| Answer» B. Only herbivorous will die | |
| 8369. |
Constant grazing and browsing in an area may ultimately result in the formation of |
| A. | Dense forest |
| B. | Grasslands |
| C. | Desert |
| D. | Bushy vegetation |
| Answer» D. Bushy vegetation | |
| 8370. |
"Biomass" is the |
| A. | Dry weight of organisms |
| B. | Fresh weight of organisms |
| C. | Both are correct |
| D. | None of the above |
| Answer» B. Fresh weight of organisms | |
| 8371. |
Which of the following is capable of causing green house effect in the environment |
| A. | Nitrogen |
| B. | Hydrogen |
| C. | Ethane |
| D. | Methane |
| Answer» E. | |
| 8372. |
The soil organisms are |
| A. | Harmful to the plants growing in the soil |
| B. | Useful to plants growing in the soil |
| C. | Neither harmful nor useful to plants growing in the soil |
| D. | Both harmful as well as useful to plants growing in the soil |
| Answer» E. | |
| 8373. |
'Eco' term refers as |
| A. | Biosphere |
| B. | Environment |
| C. | Organisms |
| D. | Plants |
| Answer» C. Organisms | |
| 8374. |
During prolonged fasting, in what sequence are the following organic compounds used up by the body? (CBSE 2003; JIPMER 2006; Pb. PMT 2007; RPMT 2007) |
| A. | First carbohydrates, next fats and lastly proteins |
| B. | First fats, next carbohydrates and lastly proteins |
| C. | First carbohydrates, next proteins and lastly lipids |
| D. | First proteins, next lipids and lastly carbohydrates |
| Answer» B. First fats, next carbohydrates and lastly proteins | |
| 8375. |
Marasmus is caused by: (MPPMT 2001) |
| A. | obesity |
| B. | dwarfism |
| C. | prolonged starvation |
| D. | deficiency of vitamin |
| Answer» D. deficiency of vitamin | |
| 8376. |
A man is said to be starving when: |
| A. | food meets energy loss |
| B. | diet is deficient in protein |
| C. | stomach is not filled by food |
| D. | food is not meeting energy loss |
| Answer» E. | |
| 8377. |
The food that gives more calories per unit mass is: |
| A. | fat |
| B. | protein |
| C. | vitamin |
| D. | carbohydrate |
| Answer» B. protein | |
| 8378. |
Caloric values for carbohydrates, proteins and fats are: (DPMT 2005, 06) |
| A. | 50 cal, 4.68 cal and 80 cal respectively |
| B. | 40 cal, 80 cal and 100 cal respectively |
| C. | 5.68 cal, 100 cal and 30 cal respectively |
| D. | 4.1 cal, 5.65 cal and 9.45 cal respectively |
| Answer» E. | |
| 8379. |
Average kilocalorie of energy needed by woman is: (Orissa JEE 2005) |
| A. | less than man |
| B. | more than man |
| C. | equal to man |
| D. | cannot be predicted |
| Answer» B. more than man | |
| 8380. |
Mammals may drink water and also get it from: |
| A. | secretion of saliva |
| B. | oxidation of glucose |
| C. | breakdown of glycogen into glucose |
| D. | conversion of oxyhaemoglobin to haemoglobin |
| Answer» C. breakdown of glycogen into glucose | |
| 8381. |
Which of the following diseases is caused by the deficiency of proteins in children? (BHU 2003) |
| A. | Marasmus |
| B. | Kwashiorkor |
| C. | Rickets |
| D. | Both [a] and [b] |
| Answer» E. | |
| 8382. |
Kwashiorkor is caused due to deficiency of: (Manipal 2005) |
| A. | calories |
| B. | hormone |
| C. | zwitter ion |
| D. | essential amino acid |
| Answer» E. | |
| 8383. |
Sequence of food materials consumed during starvation is: (CPMT 2005) |
| A. | carbohydrates \[\to \] proteins \[\to \] fats |
| B. | proteins \[\to \] fats \[\to \] carbohydrates |
| C. | fats proteins \[\to \] carbohydrates |
| D. | firstly carbohydrates \[\to \] fats \[\to \] proteins |
| Answer» E. | |
| 8384. |
The daily dietary requirement of a moderately active adult individual is approximately: (MPPMT 2004) |
| A. | 4000 Real |
| B. | 8000 kcal |
| C. | 1000 Real |
| D. | 2500 kcal |
| Answer» E. | |
| 8385. |
The most important function of endoplasmic reticulum is [CPMT 1973; DPMT 1993; Haryana PMT 2005] |
| A. | Protein synthesis |
| B. | Nourishing the nucleus |
| C. | Secretion of materials |
| D. | To give shape to the cell |
| Answer» B. Nourishing the nucleus | |
| 8386. |
During ultracentrifugation the ER and bodies associated with it are separated as a fraction known as |
| A. | Microsome |
| B. | Polysome |
| C. | Quantosome |
| D. | Episome |
| Answer» B. Polysome | |
| 8387. |
Sarcoplasmic reticulum is related with |
| A. | Protein synthesis |
| B. | Hormone synthesis |
| C. | Release of\[C{{a}^{++}}\]ions and contraction of muscles |
| D. | None of these |
| Answer» D. None of these | |
| 8388. |
GERL system was proposed by |
| A. | Aschoff |
| B. | Metchnikoff |
| C. | Novikoff |
| D. | None of these |
| Answer» D. None of these | |
| 8389. |
Endoplasmic reticulum is in continuation with [BHU 2005] |
| A. | Golgibody |
| B. | Nuclear wall |
| C. | Mitochondria |
| D. | cell wall |
| Answer» C. Mitochondria | |
| 8390. |
Which of the following is related to glycosylation of protein [CBSE PMT 2000] |
| A. | ER |
| B. | Peroxisome |
| C. | Lysosome |
| D. | Mitochondria |
| Answer» B. Peroxisome | |
| 8391. |
The enzyme present in golgi bodies is [Kashmir MEE 1995] |
| A. | PEP carboxylase |
| B. | Peptidyl transferase |
| C. | Thymine ligase |
| D. | Glycosyl transferase |
| Answer» E. | |
| 8392. |
Golgi bodies are maximum in [DPMT 1982] |
| A. | Calyptrogen |
| B. | Root tip |
| C. | Root cap |
| D. | None of these |
| Answer» D. None of these | |
| 8393. |
Which of the following structure is the functional unit in a golgi complex |
| A. | Cristae |
| B. | Cisternae |
| C. | Thylakoid |
| D. | None of the above |
| Answer» C. Thylakoid | |
| 8394. |
Cell wall materials are synthesized by |
| A. | Dictyosomes |
| B. | Ribosomes |
| C. | Lysosomes |
| D. | Centrosomes |
| Answer» B. Ribosomes | |
| 8395. |
Zone of exclusion is associated with [BHU 1991] |
| A. | Golgi complex |
| B. | Endoplasmic reticulum |
| C. | Mitochondria |
| D. | Chloroplast |
| Answer» B. Endoplasmic reticulum | |
| 8396. |
The scattered sacs of golgi in plants are called as |
| A. | Dictyosome |
| B. | Ribosome |
| C. | Cisternae |
| D. | Microsome |
| Answer» B. Ribosome | |
| 8397. |
Secretory and membrane proteins are processed in [BHU 1991; CPMT 2000; MP PMT 2003] |
| A. | Peroxisomes |
| B. | Glyoxysomes |
| C. | Golgi complex |
| D. | Sphaerosomes |
| Answer» D. Sphaerosomes | |
| 8398. |
The transfer vesicle from RER fuse with which region of golgi complex [CPMT 2000] |
| A. | Cis |
| B. | Medial |
| C. | Trans |
| D. | Protein arms |
| Answer» B. Medial | |
| 8399. |
The golgi apparatus is bounded by |
| A. | Cellulose |
| B. | Hemicellulose |
| C. | Pectin |
| D. | None of the above |
| Answer» E. | |
| 8400. |
Golgi bodies are absent in [MP PMT 1999] |
| A. | Plants |
| B. | Bacteria |
| C. | Animals |
| D. | Eukaryotic cells |
| Answer» C. Animals | |