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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.
| 7101. |
Glycolysis takes place in [BHU 1979; MP PMT 1988, 89, 96, 2004, 05; KCET 1994; BVP 2001; Orissa PMT 2002; RPMT 2002; CPMT 2004] |
| A. | Mitochondria |
| B. | Cytoplasm |
| C. | Both mitochondria and cytoplasm |
| D. | Vacuole |
| Answer» C. Both mitochondria and cytoplasm | |
| 7102. |
Total ATP production during EMP pathway is [CBSE PMT 1990; CPMT 1982, 84; DPMT 1983] |
| A. | 24 ATP molecules |
| B. | 8 ATP molecules |
| C. | 38 ATP molecules |
| D. | 6 ATP molecules |
| Answer» C. 38 ATP molecules | |
| 7103. |
In glycolysis, the end product is [CPMT 1984, 89, 96; KCET 1998; AMU 1990; MP PMT 1996, 2003] |
| A. | Protein is converted to glucose |
| B. | Glucose is converted into fructose |
| C. | Starch is converted into glucose |
| D. | Glucose is converted into pyruvic acid |
| Answer» E. | |
| 7104. |
Which of the following is the product of phosphorylation [MP PMT 1989; AMU 1990] |
| A. | PGA |
| B. | Fructose 1, 6 diphosphate |
| C. | DPGA |
| D. | Pyruvic acid |
| Answer» C. DPGA | |
| 7105. |
First stage in respiration is |
| A. | Aerobic oxidation of pyruvic acid |
| B. | Liberation of\[C{{O}_{2}}\] |
| C. | Glycolysis |
| D. | Electron transport system |
| Answer» D. Electron transport system | |
| 7106. |
In cellular respiration\[{{O}_{2}}\]is used as a final receptor of |
| A. | ATP and NADH |
| B. | H and e |
| C. | Fe |
| D. | Cytochrome |
| Answer» C. Fe | |
| 7107. |
Which of the following process should not operate when organic acids are used as respiratory substrates |
| A. | Glycolysis |
| B. | Kreb's cycle |
| C. | Terminal oxidation |
| D. | Phosphorylation |
| Answer» B. Kreb's cycle | |
| 7108. |
The function of aldolase enzyme during respiration is to catalyze phosphoglyceraldehyde |
| A. | Reduction |
| B. | Oxidation |
| C. | Formation |
| D. | All the above |
| Answer» D. All the above | |
| 7109. |
Glycolysis was invented by |
| A. | Calvin |
| B. | Kreb's |
| C. | J.C. Bose |
| D. | None of the above |
| Answer» E. | |
| 7110. |
Petals of which of the plant contains gibberellins |
| A. | Cassia fistula |
| B. | Rosa indica |
| C. | Pisum sativum |
| D. | Negella sativa |
| Answer» B. Rosa indica | |
| 7111. |
The number of gibberellins known till now is |
| A. | 15 |
| B. | 26 |
| C. | 38 |
| D. | 60 |
| Answer» E. | |
| 7112. |
Which of the following is used to sprout the potato in winter |
| A. | Kinetin |
| B. | Xylene |
| C. | Ethylene |
| D. | Gibberellin |
| Answer» E. | |
| 7113. |
Gibberellic acid induces flower [CBSE PMT 1997] |
| A. | In some gymnospermic plants only |
| B. | In long day plants under short day conditions |
| C. | In short day plants under long day conditions |
| D. | In day neutral plants under dark conditions |
| Answer» C. In short day plants under long day conditions | |
| 7114. |
Cell elongation in internodal region takes place due to [CPMT 1989; CBSE PMT 2004] |
| A. | Gibberellins |
| B. | Ethylene |
| C. | Cytokinins |
| D. | Indole acetic acid |
| Answer» B. Ethylene | |
| 7115. |
By which of the following method seed dormancy can be broken or its duration can be reduced [AMU 2005] |
| A. | Skretching of seed coat |
| B. | Layering of seeds |
| C. | Change in the light, pressure and temperature |
| D. | All of the above |
| Answer» E. | |
| 7116. |
Gibberellic acid has been successfully used to induce flowering [MP PMT 1986] |
| A. | In short day plants under long day conditions |
| B. | In long day plants under short day conditions |
| C. | For some plants |
| D. | None of the above |
| Answer» C. For some plants | |
| 7117. |
Genetic dwarfness can be overcome by treating with [MHCET 2003] |
| A. | Cytokinin |
| B. | Auxins |
| C. | Gibberellins |
| D. | Ethylen |
| Answer» D. Ethylen | |
| 7118. |
The hormone involved in metabolism of food material in cereal grain during germination is [DPMT 2003] |
| A. | Auxin |
| B. | CKN |
| C. | GA |
| D. | None of these |
| Answer» D. None of these | |
| 7119. |
Gibberellin is [Harayana PMT 2005] |
| A. | Sugar |
| B. | Sterol |
| C. | Vitamin |
| D. | None of these |
| Answer» E. | |
| 7120. |
The activity of \[\alpha \]-amylase in the endosperm of barley germinating seed is induced by [MP PMT 2002] |
| A. | Ethylene |
| B. | Cytokinin |
| C. | IAA |
| D. | Gibberellin |
| Answer» E. | |
| 7121. |
The gibberellins are plant growth hormones. They cause elongation of stems. Gibberellin was first isolated by Japanese workers from [CPMT 1993, 94, 2003; AIEEE 2003] |
| A. | Endosperm of barley |
| B. | Sporophyte of moss |
| C. | A parasitic fungus |
| D. | Scutellum of rice |
| Answer» D. Scutellum of rice | |
| 7122. |
Apical dominance is not affected by [MP PMT 2001] |
| A. | Indole acetic acid |
| B. | Gibberellic |
| C. | Indole acetaldehyde |
| D. | Indole butyric acid |
| Answer» C. Indole acetaldehyde | |
| 7123. |
Dormancy of seed is broken by [RPMT 2002; Pb. PMT 2004] |
| A. | Auxin |
| B. | Gibberellins |
| C. | Ethylene |
| D. | Cytokinin |
| Answer» C. Ethylene | |
| 7124. |
Which of the following breaks the dormancy of potato tubers [CPMT 2001] |
| A. | IAA |
| B. | ABA |
| C. | Zeatin |
| D. | Gibberellin |
| Answer» E. | |
| 7125. |
Gibberellin is helpful in [MP PMT 1999] |
| A. | Elongation of plants |
| B. | Inducing dwarfism |
| C. | Fat hydrolysis |
| D. | Protein synthesis |
| Answer» B. Inducing dwarfism | |
| 7126. |
Specific property attributed to gibberellins is [CPMT 1975, 84; DPMT 1984, 90; MP PMT 1987, 90; BHU 1983; KCET 2004] |
| A. | Shortening of genetically tall plants |
| B. | Elongation of genetically dwarf plant |
| C. | Promotion of rooting |
| D. | Yellowing of young leaves |
| Answer» C. Promotion of rooting | |
| 7127. |
In some plants, the cold treatment may be replaced by the application of |
| A. | Ethylene |
| B. | Cytokinin |
| C. | Gibberellin |
| D. | Abscissic acid |
| Answer» D. Abscissic acid | |
| 7128. |
Gibberellin is obtained from a [DPMT 2004] |
| A. | Fungus |
| B. | Alga |
| C. | Basidiolichen |
| D. | Flowering plants |
| Answer» B. Alga | |
| 7129. |
The habit of a cabbage or acaulescent plant can be changed drastically by the application of |
| A. | IAA |
| B. | \[G{{A}_{3}}\] |
| C. | ABA |
| D. | 2, 4-D |
| Answer» C. ABA | |
| 7130. |
Which of the following exhibits a non-polar movement |
| A. | Auxin |
| B. | Gibberellin |
| C. | ABA |
| D. | Auxin and cytokinin |
| Answer» C. ABA | |
| 7131. |
Bioassay for gibberellin is |
| A. | Green leaf test/Richmond-Lang effect |
| B. | Cell division/Bud induction test |
| C. | Dwarf maize/Barley aleurone test |
| D. | Avena curvature test |
| Answer» D. Avena curvature test | |
| 7132. |
Gibberellic acid is a product of [CPMT 1993, 94, 2003] |
| A. | Algae |
| B. | Gibberella fujikuroi |
| C. | Protein |
| D. | None of these |
| Answer» C. Protein | |
| 7133. |
The hormone which was discovered through 'foolish seedling' disease of rice is [AIIMS 1994] |
| A. | Indole-3-acetic acid |
| B. | Ethylene |
| C. | Gibberellic acid |
| D. | Kinetin |
| Answer» D. Kinetin | |
| 7134. |
Gibberellins differ from auxins since they produce [CPMT 1986] |
| A. | Cell division |
| B. | Stem elongation |
| C. | Root initiation |
| D. | Shortening of internodes |
| Answer» C. Root initiation | |
| 7135. |
Gibberellin was first extracted from [BHU 1978, 88, 89; CPMT 1996, 98] |
| A. | Gibberella fujikuroi |
| B. | Algae |
| C. | Bacteria |
| D. | Roots of higher plants |
| Answer» B. Algae | |
| 7136. |
Largest growth of human foetus is done in |
| A. | \[{{4}^{th}}\]month |
| B. | \[{{2}^{nd}}\]month |
| C. | \[{{6}^{th}}\]month |
| D. | \[{{8}^{th}}\]month |
| Answer» E. | |
| 7137. |
Gestation period is the duration [MP PMT 1988] |
| A. | Of fertilization |
| B. | Between egg growth and ovulation |
| C. | Between fertilization and parturition |
| D. | None of the above |
| Answer» D. None of the above | |
| 7138. |
The gestation period of rabbit is [CPMT 1980; DPMT 1985] |
| A. | 28-32 days |
| B. | 20-25 days |
| C. | 60-70 days |
| D. | 80-90 days |
| Answer» B. 20-25 days | |
| 7139. |
The longest gestation period is found in |
| A. | Elephant |
| B. | Gorilla |
| C. | Chimpanzee |
| D. | Man |
| Answer» B. Gorilla | |
| 7140. |
The shortest gestation period is seen in [CBSE PMT 1993] |
| A. | Man |
| B. | Elephant |
| C. | Cat |
| D. | Mouse |
| Answer» E. | |
| 7141. |
The gestation period of elephants is about [BHU 1985] |
| A. | 11 months |
| B. | 10 months |
| C. | 15 months |
| D. | 22 months |
| Answer» E. | |
| 7142. |
Somaclonal variation appears in [AIIMS 2005] |
| A. | Organism produced through somatic hybridization |
| B. | Plants growing in highly polluted conditions |
| C. | Apomictic plants |
| D. | Tissue culture raised plants |
| Answer» B. Plants growing in highly polluted conditions | |
| 7143. |
The "cri-du-chat" syndrome is caused by change in chromosome structure involving [AIIMS 2005] |
| A. | Deletion |
| B. | Duplication |
| C. | Inversion |
| D. | Translocation |
| Answer» B. Duplication | |
| 7144. |
Turner's syndrome is an example of [Kerala PMT 2004] |
| A. | Monosomy |
| B. | Bisomy |
| C. | Trisomy |
| D. | Polyploidy |
| E. | Translocation |
| Answer» B. Bisomy | |
| 7145. |
In man, which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomes [CPMT 2004] |
| A. | 22 pairs + XXY males |
| B. | 22 pairs + XX females |
| C. | 22 pairs + XXXY females |
| D. | 22 pairs + Y females |
| Answer» B. 22 pairs + XX females | |
| 7146. |
Phenylketonuria is a genetic disorder due to a defect in metabolism of the following. [Kerala PMT 2004] |
| A. | Polysaccharides |
| B. | Fatty acids |
| C. | Vitamins |
| D. | Amino acids |
| E. | Hormones |
| Answer» E. Hormones | |
| 7147. |
The amino acid substituted in sickle cell anaemia is [Kerala CET 2004, 05] |
| A. | Glutamic acid for valine in the alpha chain |
| B. | Glutamic acid for valine in the beta chain |
| C. | Valine for glutamic acid in the alpha chain |
| D. | Valine for glutamic acid in the beta chain |
| E. | None of these |
| Answer» E. None of these | |
| 7148. |
Frequency of Down's syndrome increases when the maternal age is [Orissa JEE 2004] |
| A. | Above 35 years |
| B. | Below 35 years |
| C. | During 1st pregnancy |
| D. | In mothers of at least 3 children |
| Answer» B. Below 35 years | |
| 7149. |
A recessive mutant is one which [Orissa JEE 2004] |
| A. | Is not expressed |
| B. | Is rarely expressed |
| C. | Is expressed only in homozygous and hemixygous state |
| D. | Is expresesed only in heterozygous state. |
| Answer» D. Is expresesed only in heterozygous state. | |
| 7150. |
Which is correct about white tiger [Orissa JEE 2004] |
| A. | White tiger is recessive mutant |
| B. | It is part of subspecies of India tiger |
| C. | It is a type of albino |
| D. | It is a transgenic animal |
| Answer» B. It is part of subspecies of India tiger | |