MCQOPTIONS
Saved Bookmarks
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.
| 6101. |
Which of the following is the non-polar part of chlorophyll |
| A. | Phytol |
| B. | Porphyrin |
| C. | Pyrrol |
| D. | None of the above |
| Answer» B. Porphyrin | |
| 6102. |
ATP formation in photosynthesis is known as [DPMT 1977; CPMT 1986, 98; NCERT 1986; MP PMT 1993] |
| A. | Phosphorylation |
| B. | Photophosphorylation |
| C. | Oxidative phosphorylation |
| D. | None of the above |
| Answer» C. Oxidative phosphorylation | |
| 6103. |
Hill reaction occurs in [AIIMS 2003] |
| A. | High altitude plants |
| B. | Total darkness |
| C. | Absence of water |
| D. | Presence of ferredoxin |
| Answer» E. | |
| 6104. |
Phytol chain is present in [Wardha 2005] |
| A. | Carotenoids |
| B. | Haemoglobin |
| C. | Chlorophyll |
| D. | Phycocyanin |
| Answer» D. Phycocyanin | |
| 6105. |
The light absorbed by the chlorophyll is at the wave length of [MP PMT 2002] |
| A. | 400 nm |
| B. | 500 nm |
| C. | 600 nm |
| D. | 660 nm |
| Answer» E. | |
| 6106. |
Number of chlorophyll arranged per reaction centre in the light harvesting complex are [Orissa JEE 2005] |
| A. | 100 |
| B. | 200 |
| C. | 300 |
| D. | 400 |
| Answer» D. 400 | |
| 6107. |
Photosystem I and Photosystem II are found in [MP PMT 2001] |
| A. | Stroma of chloroplast |
| B. | Grana of chloroplast |
| C. | Matrix of mitochondria |
| D. | Inner membrane of mitochondria |
| Answer» C. Matrix of mitochondria | |
| 6108. |
Which fractions of the visible spectrum of solar radiations are primarily absorbed by carotenoids of the higher plants [CBSE PMT 1999] |
| A. | Violet and blue |
| B. | Blue and green |
| C. | Green and red |
| D. | Red and violet |
| Answer» B. Blue and green | |
| 6109. |
Which one of the following concerns photophosphorylation [CBSE PMT 1999] |
| A. | \[\text{AMP}+\text{Inorganic}\,P{{O}_{\text{4}}}\xrightarrow{\text{Light}\,\text{energy}}\text{ATP}\] |
| B. | \[\text{ADP}+\text{AMP}\xrightarrow{\text{Light}\,\,\text{energy}}\text{ATP}\] |
| C. | \[\text{ADP}+\text{Inorganic}\,\,P{{O}_{4}}\xrightarrow{\text{Light}\,\text{energy}}\text{ATP}\] |
| D. | \[\text{ADP}+\text{Inorganic}\,\,P{{O}_{\text{4}}}\to \text{ATP}\] |
| Answer» D. \[\text{ADP}+\text{Inorganic}\,\,P{{O}_{\text{4}}}\to \text{ATP}\] | |
| 6110. |
In light reaction which is formed [RPMT 1999] |
| A. | ATP |
| B. | NADPH |
| C. | \[{{O}_{2}}\] |
| D. | All of these |
| Answer» E. | |
| 6111. |
Which of the following pigment is yellow in colour |
| A. | Chlorophyll 'a' |
| B. | Chlorophyll 'b' |
| C. | Carotene |
| D. | Xanthophyll |
| Answer» E. | |
| 6112. |
Chlorophyll molecules has the structure like |
| A. | Monopyruvic |
| B. | Dipyruvic |
| C. | Tripyruvic |
| D. | Tetrapyruvic |
| Answer» E. | |
| 6113. |
Why bacteria can be considered fission fungi |
| A. | They show budding |
| B. | They show fission |
| C. | Show fission and fungal characters |
| D. | Show fission and algal characters |
| Answer» D. Show fission and algal characters | |
| 6114. |
Why the food can be kept for a longer time in cold house than in normal conditions [CPMT 1971] |
| A. | Insect can not enter |
| B. | Bacterial multiplication stops |
| C. | Bacterial multiplication is reduced |
| D. | There is plasmolysis at low temperature |
| Answer» D. There is plasmolysis at low temperature | |
| 6115. |
The bacteria growing on medium and the mass so formed is called |
| A. | Thallus |
| B. | Spores |
| C. | Colony |
| D. | Tissue |
| Answer» D. Tissue | |
| 6116. |
Bacteria commonly reproduce vegetatively by [AFMC 1988] |
| A. | Binary fission |
| B. | Budding |
| C. | Conjugation |
| D. | Oidia |
| Answer» B. Budding | |
| 6117. |
The process in which viruses are involved in sexual reproduction of bacteria is called [BHU 1977, 81; AFMC 1982; CPMT 1993, 98, 99, 2001; MP PMT 1996; BHU 2000, 01; JIPMER 2001; Haryana PMT 2005] |
| A. | Transduction |
| B. | Transcription |
| C. | Transformation |
| D. | Translation |
| Answer» B. Transcription | |
| 6118. |
Viral genome incorporated and integrates with bacterial genomes is refer to as [AFMC 2005] |
| A. | Prophages |
| B. | RNA |
| C. | DNA |
| D. | Both (b) and (c) |
| Answer» B. RNA | |
| 6119. |
Transformation experiments using Pneumococcus bacteria led to the hypothesis that [CPMT 1988; CBSE PMT 1993, 99] |
| A. | DNA is the genetic material |
| B. | Bacteria have sexual reproduction |
| C. | Chromosomes are made up of DNA |
| D. | RNA is the transfer link |
| Answer» B. Bacteria have sexual reproduction | |
| 6120. |
Transformation experiment was performed on which of the following bacteria [CBSE PMT 2002] |
| A. | E. coli |
| B. | Salmonella |
| C. | Pasturella pestis |
| D. | Diplococcus pneumonia |
| Answer» E. | |
| 6121. |
Transfer of DNA from one bacteria to another by contact is known as [Kerala CET 2001] |
| A. | Conjugation |
| B. | Transformation |
| C. | Transduction |
| D. | Transcription |
| Answer» B. Transformation | |
| 6122. |
Bacteria reproduce sexually by [MP PMT 2000] |
| A. | Endospores |
| B. | Transformation |
| C. | Conidia |
| D. | Exospores |
| Answer» C. Conidia | |
| 6123. |
The process of replication in plasmid DNA, other than initiation, is controlled by [RPMT 1999] |
| A. | Plasmid gene |
| B. | Bacterial gene |
| C. | Cytoplasmic gene |
| D. | Mitochondrial gene |
| Answer» C. Cytoplasmic gene | |
| 6124. |
Penicillin inhibits bacterial multiplication because [CPMT 1998] |
| A. | It checks spindle formation |
| B. | It destroys chromation |
| C. | It inhibits cell wall formation |
| D. | It checks RNA synthesis |
| Answer» D. It checks RNA synthesis | |
| 6125. |
Transformation in bacteria was discovered by [MP PMT 1997, 98, 2000] |
| A. | Lederberg |
| B. | Griffith |
| C. | Avery et al |
| D. | Tatum |
| Answer» D. Tatum | |
| 6126. |
How many generations are required for a bacterium to produce 1024 cells by vegetative reproduction |
| A. | 256 |
| B. | 10 |
| C. | 6 |
| D. | 8 |
| Answer» C. 6 | |
| 6127. |
On the basis of which activity of bacteria it has been proved for the first time that DNA is genetic material |
| A. | Conjugation |
| B. | Transformation |
| C. | Transduction |
| D. | Asexual reproduction |
| Answer» C. Transduction | |
| 6128. |
Sex factor in bacteria is [CBSE PMT 1996; BHU 1999] |
| A. | F?replicon |
| B. | Chromosomal replicon |
| C. | RNA |
| D. | Sex pilis |
| Answer» B. Chromosomal replicon | |
| 6129. |
Under the optimum condition of temperature and nutrition most of the bacteria divide at the interval [MP PMT 1989] |
| A. | 24 hours |
| B. | 20 minutes |
| C. | 60 minutes |
| D. | 5 minutes |
| Answer» C. 60 minutes | |
| 6130. |
Conjugation in bacteria was discovered by [MP PMT 2000] |
| A. | Robert Koch |
| B. | Schaudinn and Hoffmann |
| C. | Lederberg and Tatum |
| D. | Leeuwenhoek |
| Answer» D. Leeuwenhoek | |
| 6131. |
In bacteria, sexual conjugation is promoted by |
| A. | R?factor |
| B. | col-factor |
| C. | F?factor |
| D. | None of the above |
| Answer» D. None of the above | |
| 6132. |
Transfer of genetic information from one bacterium to another in the transduction process is through [CBSE PMT 1998] |
| A. | Physical contact between donor and recipient strains |
| B. | Conjugation between opposite strain bacterium |
| C. | Bacteriophages released from the donor bacterial strain |
| D. | Another bacterium having special organ for conjugation |
| Answer» D. Another bacterium having special organ for conjugation | |
| 6133. |
A bacterial cell undergoes binary fission every twenty minutes. Starting with a single bacterium how many bacteria will be produced at the end of 3 hours |
| A. | 128 |
| B. | 256 |
| C. | 512 |
| D. | 1022 |
| Answer» D. 1022 | |
| 6134. |
In the bacterium Bacillus subtilis the cells often become attached from end to end forming long filamentous chains, which are embedded in a mass of mucilage forming a scum layer on substratum. It is called as |
| A. | Palmella stage |
| B. | Torula stage |
| C. | Zoogloea stage |
| D. | None of the above |
| Answer» D. None of the above | |
| 6135. |
Pili in bacteria represent [BHU 2001] |
| A. | Extra-chromosomal genetic element |
| B. | Protoplasmic outgrowths of donor cells |
| C. | Small flagella |
| D. | Special bacterial cilia |
| Answer» C. Small flagella | |
| 6136. |
The bacteria grown in the medium containing \[{{S}^{35}}\] as lone source of sulphur show its incorporation into [AIIMS 1994] |
| A. | DNA |
| B. | Protein |
| C. | RNA |
| D. | None of the above |
| Answer» C. RNA | |
| 6137. |
There is no alternation of generation in Esche-richia coli because there is no [CBSE PMT 1994] |
| A. | Syngamy |
| B. | Reduction division |
| C. | Conjugation |
| D. | None of these |
| Answer» C. Conjugation | |
| 6138. |
How many bacteria are produced in four hours if a bacterium divides once in half an hour [DPMT 1990] |
| A. | 8 |
| B. | 64 |
| C. | 16 |
| D. | 256 |
| Answer» E. | |
| 6139. |
Bacterial cell divides in every minute it takes one hour to fill up a cup. How much time will be taken to fill half the cup [CPMT 1981, 84; DPMT 1982] |
| A. | 59 minutes |
| B. | 30 minutes |
| C. | 60 minutes |
| D. | 29 minutes |
| Answer» B. 30 minutes | |
| 6140. |
Mycorrhizal association occurs in Pinus, Ficus and [Haryana PMT 2000] |
| A. | Utricularia |
| B. | Legumes |
| C. | Eucalyptus |
| D. | Azardirachta |
| Answer» D. Azardirachta | |
| 6141. |
Which statements is wrong about lichens [CBSE PMT 1996] |
| A. | Some species are eaten by reindeers |
| B. | Lichens are indicators of pollution |
| C. | They grow rapidly about 2cm per day |
| D. | They have symbiotic relationship between alga and fungus |
| Answer» D. They have symbiotic relationship between alga and fungus | |
| 6142. |
Fungal partner of a lichen is commonly [BHU 1996] |
| A. | Ascomycetes |
| B. | Basidiomycetes |
| C. | Phycomycetes |
| D. | Deuteromycetes |
| Answer» B. Basidiomycetes | |
| 6143. |
Mycorrhiza works as [CPMT 1998; BHU 2002] |
| A. | Modified root |
| B. | An organism for vegetative propagation |
| C. | A root hair in adverse condition |
| D. | Mechanical tissue for support |
| Answer» D. Mechanical tissue for support | |
| 6144. |
The symbiotic association of fungi and algae is called [BHU 1990; AIIMS 1990; CPMT 1996, 98; AFMC 1998; KCET 2000; Chd. CET 2000; CBSE PMT 2001] |
| A. | Lichen |
| B. | Mycorrhiza |
| C. | Both (a) and (b) |
| D. | Mycoplasma |
| Answer» B. Mycorrhiza | |
| 6145. |
Mycorrhiza is a [CPMT 1994] |
| A. | Long thin root |
| B. | Association of root and fungus |
| C. | Root like underground stem |
| D. | Parasitic root |
| Answer» C. Root like underground stem | |
| 6146. |
There exists a close association between the algae and the fungus within a lichen. The fungus [CBSE PMT 2005] |
| A. | Fixes the atmospheric nitrogen for the alga |
| B. | Provides protection, anchorage and absorption for the alga |
| C. | Provides food for the alga |
| D. | Releases oxygen for the alga |
| Answer» C. Provides food for the alga | |
| 6147. |
Which one of the following pairs is correctly matched [AIIMS 2003] |
| A. | Rhizobium - Parasite in the roots of leguminous plants |
| B. | Mycorrhizae - Mineral uptake from soil |
| C. | Yeast - Production of biogas |
| D. | Myxomycetes - The disease ring worm |
| Answer» C. Yeast - Production of biogas | |
| 6148. |
Fungus/Lichens which grow on wood is [AFMC 2004] |
| A. | Terricolous |
| B. | Saxicolous |
| C. | Lignocolous |
| D. | Corticolous |
| Answer» D. Corticolous | |
| 6149. |
Lichens are well known combination of an alga and a fungus where fungus has [CBSE PMT 2004; Pb. PMT 2004; CPMT 2005] |
| A. | A parasitic relationship with the alga |
| B. | A symbiotic relationship with the alga |
| C. | A saprophytic relationship with the alga |
| D. | An epiphytic relationship with the alga |
| Answer» C. A saprophytic relationship with the alga | |
| 6150. |
Cladonia rangiferina is a/an [BHU 2004] |
| A. | Algae |
| B. | Lichen |
| C. | Fungus |
| D. | Angiosperm |
| Answer» C. Fungus | |