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.
| 3101. |
Fig is pollinated by [MP PMT 1987] |
| A. | Wind |
| B. | Self |
| C. | Water |
| D. | Insects (Blastophaga grossorum) |
| Answer» E. | |
| 3102. |
Which prevents self pollination [AFMC 1986; AIIMS 1992] |
| A. | Self sterility |
| B. | Herkogamy |
| C. | Dichogamy |
| D. | All of the above |
| Answer» E. | |
| 3103. |
Self pollination means [CPMT 1982; DPMT 1983; AFMC 1984] |
| A. | Occurrence of male and female sex organs in the same flower |
| B. | Germination of pollens within the anther |
| C. | Transference of pollens from anther to the stigma within the same flower |
| D. | Transference of pollens from one flower to another on the same plant |
| Answer» D. Transference of pollens from one flower to another on the same plant | |
| 3104. |
Correct definition of pollination is [CPMT 1982; AFMC 1984, 85] |
| A. | Transfer of pollen grain from anther to stigma |
| B. | Germination of pollen grain |
| C. | Growth of pollen tube in ovule |
| D. | Visits of insects in flower |
| Answer» B. Germination of pollen grain | |
| 3105. |
Dichogamy which helps in cross pollination is a floral mechanism in which [CPMT 1989, 2000] |
| A. | Pollen sac and stigma are at different heights |
| B. | Anther and stigma mature at different times |
| C. | Structure of pollen sac and stigma functions as hurdles |
| D. | Pollen grain is unable to germinate on the stigma of the same flower |
| Answer» C. Structure of pollen sac and stigma functions as hurdles | |
| 3106. |
When pollen grains of a flower pollinate the stigma of another flower of the same plant, it is called [AllMS 1980; BHU 1999; AMU 2005; CPMT 2005] |
| A. | Dichogamy |
| B. | Herkogamy |
| C. | Geitnogamy |
| D. | Autogamy |
| Answer» D. Autogamy | |
| 3107. |
Pollination by slug and snails is called [AIIMS 1998; CBSE PMT 2002; KCET 1994] |
| A. | Ornithophilous |
| B. | Malacophilous |
| C. | Anemophilous |
| D. | Chiropterophilous |
| Answer» C. Anemophilous | |
| 3108. |
Which one of the following character causes cross pollination |
| A. | Cleistogamy |
| B. | Dichogamy |
| C. | Homogamy |
| D. | All the above |
| Answer» C. Homogamy | |
| 3109. |
Thylakoids are constituents of [MP PMT 1997] |
| A. | Chloroplasts |
| B. | Mitochondria |
| C. | ER |
| D. | Ribosomes |
| Answer» B. Mitochondria | |
| 3110. |
A flattened disc-like sac in a chloroplast is called a [MP PMT 1997; Orissa JEE 2004] |
| A. | Loculus |
| B. | Thylakoid |
| C. | Stroma |
| D. | Margin |
| Answer» C. Stroma | |
| 3111. |
In which of the following cell organelle, both the photo and thermochemical reactions occur |
| A. | Lysosome |
| B. | Chloroplast |
| C. | Mitochondria |
| D. | Ribosome |
| Answer» C. Mitochondria | |
| 3112. |
Which of the following organelles is bounded by two unit membranes [Pune CET 1998] |
| A. | Golgi complex |
| B. | Peroxisome |
| C. | Chloroplast |
| D. | Lysosome |
| Answer» D. Lysosome | |
| 3113. |
In which plastids are not found [MP PMT 2000] |
| A. | Blue green algae |
| B. | Bacteria |
| C. | Fungi |
| D. | All of the above |
| Answer» E. | |
| 3114. |
Which of the following is maximum in chloroplast [Bihar 2005] |
| A. | RuBP carboxylase |
| B. | Hexokinase |
| C. | Phosphatase |
| D. | Nuclease |
| Answer» B. Hexokinase | |
| 3115. |
Many cells function properly and divide mitotically even though they do not have [AIIMS 2005] |
| A. | Plasma membrane |
| B. | Cytoskeleton |
| C. | Mitochondria |
| D. | Plastids |
| Answer» D. Plastids | |
| 3116. |
Main function of amyloplast is [AMU 2005] |
| A. | Water absorption |
| B. | Light absorption |
| C. | Fat accumulation |
| D. | Starch accumulation |
| Answer» E. | |
| 3117. |
In chloroplasts, chlorophyll is present in the [CBSE PMT 2004, 05] |
| A. | Thylakoids |
| B. | Stroma |
| C. | Outer membrane |
| D. | Inner membrane |
| Answer» B. Stroma | |
| 3118. |
Water soluble yellowish pigment present in petals of Dahlia is [MP PMT 2004] |
| A. | Carotene |
| B. | Xanthophyll |
| C. | Anthoxanthin |
| D. | Anthocyanin |
| Answer» D. Anthocyanin | |
| 3119. |
Extranuclear DNA is found in [BHU 1978; CPMT 1994] |
| A. | Chloroplast |
| B. | Ribosome |
| C. | Endoplasmic reticulum |
| D. | Golgi apparatus |
| Answer» B. Ribosome | |
| 3120. |
Molecular formula of chl a is [Wardha 2005] |
| A. | \[{{C}_{55}}{{H}_{72}}{{O}_{5}}{{N}_{4}}Mg\] |
| B. | \[{{C}_{55}}{{H}_{70}}{{O}_{6}}{{N}_{4}}Mg\] |
| C. | \[{{C}_{55}}{{H}_{72}}{{O}_{6}}{{N}_{4}}Mg\] |
| D. | \[{{C}_{55}}{{H}_{70}}{{O}_{5}}{{N}_{4}}Mg\] |
| Answer» B. \[{{C}_{55}}{{H}_{70}}{{O}_{6}}{{N}_{4}}Mg\] | |
| 3121. |
Group of thylakoids is called |
| A. | Granum |
| B. | Stroma |
| C. | ER |
| D. | F1 particles |
| Answer» B. Stroma | |
| 3122. |
The parallel layering of membranes in chloroplast is suited for |
| A. | Maximum light absorption |
| B. | Maximum exposure of enzymes |
| C. | Minimum light absorption so that the cells can maintain their temperature |
| D. | All the above |
| Answer» B. Maximum exposure of enzymes | |
| 3123. |
If we separate the cell organelles of a living cell, then which part should be alive [MP PMT 1984; CPMT 1982] |
| A. | Endoplasmic reticulum |
| B. | Chloroplast |
| C. | Cell wall |
| D. | Ribosome |
| Answer» C. Cell wall | |
| 3124. |
The amyloplasts look like [AFMC 1997] |
| A. | Proplastids |
| B. | Elioplast |
| C. | Aleuroplast |
| D. | Chloroplast |
| Answer» B. Elioplast | |
| 3125. |
Which one of the following pigments does not occur in the chloroplast [DPMT 1990] |
| A. | Carotene |
| B. | Chlorophyll `b' |
| C. | Xanthophyll |
| D. | Anthocyanin |
| Answer» E. | |
| 3126. |
Chromoplast may be of [CPMT 1992, 94] |
| A. | Orange colour |
| B. | Red colour |
| C. | Yellow colour |
| D. | All the above |
| Answer» E. | |
| 3127. |
The thylakoid in chloroplast are arranged as [BHU 2003] |
| A. | Interconnected disc |
| B. | Interconnected sacs |
| C. | Stacked discs |
| D. | None of these |
| Answer» D. None of these | |
| 3128. |
All plastids have essentially same structure because [CBSE PMT 1994] |
| A. | They have to perform same function |
| B. | They are localized in aerial parts of plant |
| C. | All plastids store starch, lipid and proteins |
| D. | One type of plastids can be differentiated into another type of plastid depending on cell requirements |
| Answer» E. | |
| 3129. |
The bright colours of ripe fruits are due to [AIEEE 2003] |
| A. | Leucoplasts |
| B. | Chloroplasts |
| C. | Amyloplasts |
| D. | Chromoplasts |
| Answer» E. | |
| 3130. |
Fret channels are associated with |
| A. | Two grana of a chloroplast |
| B. | Two lamellae of a granum |
| C. | Two plastids of a cell |
| D. | Two quantasomes |
| Answer» B. Two lamellae of a granum | |
| 3131. |
Number of thylakoids per granum is one in |
| A. | Red algae |
| B. | Green algae |
| C. | Leaf of pea plant |
| D. | Leaf of gram |
| Answer» B. Green algae | |
| 3132. |
Amyloplast is |
| A. | Green plastid |
| B. | Yellow plastid |
| C. | Red plastid |
| D. | Colourless plastid |
| Answer» E. | |
| 3133. |
Stroma is the ground material of which of the following [CPMT 1978; DPMT 1990; MP PMT 2004] |
| A. | Lysosomes |
| B. | Ribosomes |
| C. | Chloroplasts |
| D. | Mitochondria |
| Answer» D. Mitochondria | |
| 3134. |
How many chlorophyll molecules combine to form quantasomes |
| A. | 100 |
| B. | 150 |
| C. | 200 |
| D. | 230 |
| Answer» E. | |
| 3135. |
Factory for synthesis of sugars in autotrophic eukaryote's [CMC Vellore 1994] |
| A. | Chloroplast |
| B. | Mitochondrion |
| C. | Endoplasmic reticulum |
| D. | Ribosome |
| Answer» B. Mitochondrion | |
| 3136. |
Amyloplast is concerned with |
| A. | Absorption of water |
| B. | Absorption of light |
| C. | Store fat |
| D. | Store starch |
| Answer» E. | |
| 3137. |
Green pigment (Chlorophyll) presents in plants is [AFMC 2002; MP PMT 2005] |
| A. | Chromoplast |
| B. | Chloroplast |
| C. | Ribosome |
| D. | Lysosome |
| Answer» C. Ribosome | |
| 3138. |
The main difference between chlorophyll 'a' and 'b' is [CPMT 1992] |
| A. | Chlorophyll 'a' is linear chain compound and 'b' is branched chain |
| B. | Chlrophyll 'a' has no Mg+ ion in centre of molecule |
| C. | In chlorophyll 'a' there is \[C{{H}_{3}}\] group whereas in 'b' it is -CHO group |
| D. | All of the above |
| Answer» D. All of the above | |
| 3139. |
From recent studies it has been found that pre-existing plastids arise from [CPMT 1986; BHU 1991] |
| A. | Bodies called proplastids |
| B. | The nucleus |
| C. | The vacuole |
| D. | The cell wall |
| Answer» B. The nucleus | |
| 3140. |
Chromatophores contain |
| A. | Chlorophyll |
| B. | Pigments other than chlorophyll |
| C. | Chlorophyll and other pigments where colour of chlorophyll is masked by another pigment |
| D. | None of the above |
| Answer» D. None of the above | |
| 3141. |
"Quantasomes'' were discovered by |
| A. | Garner and Allard |
| B. | Muller and Morgan |
| C. | Lederberg and Tatum |
| D. | Park and Biggins |
| Answer» E. | |
| 3142. |
The chloroplasts of algae usually lack [MP PMT 1994] |
| A. | Grana |
| B. | Pigments |
| C. | Quantasomes |
| D. | Lamellae |
| Answer» B. Pigments | |
| 3143. |
A well organised system of grana and stroma in plastids of normal barley plant was reported by |
| A. | de Von Wettstein |
| B. | Peter Satir |
| C. | P. Armond |
| D. | Grell |
| Answer» B. Peter Satir | |
| 3144. |
Anthocyanins are pigments which are [BVP 2000] |
| A. | Water soluble and located in chromoplasts |
| B. | Water insoluble and located in chromoplasts |
| C. | Water insoluble and located in cell sap |
| D. | Water soluble and located in cell sap |
| Answer» E. | |
| 3145. |
Cell organelles found only in plants [DPMT 1981; BHU 1983; AFMC 1984; MP PMT 2001] |
| A. | Golgi complex |
| B. | Mitochondria |
| C. | Plastids |
| D. | Ribosomes |
| Answer» D. Ribosomes | |
| 3146. |
Ion carriers are located in [KCET 2000] |
| A. | Nucleus |
| B. | Cell wall |
| C. | Cellular space |
| D. | Plasma membranes |
| Answer» E. | |
| 3147. |
Phospholipids are [Pb. PMT 2000] |
| A. | Amphipathic |
| B. | Amphibolic |
| C. | Hydrophobic |
| D. | None of these |
| Answer» B. Amphibolic | |
| 3148. |
Lipid molecule in plasma membrane are arranged in [CPMT 2002] |
| A. | Scattered |
| B. | Series |
| C. | Alternate |
| D. | Head parallel |
| Answer» E. | |
| 3149. |
According to Robertson, thickness of lipid zone in the cell membrane ranges from |
| A. | \[\text{10-20}\overset{\text{o}}{\mathop{\text{A}}}\,\] |
| B. | \[\text{25-35}\overset{\text{o}}{\mathop{\text{A}}}\,\] |
| C. | \[\text{50-60}\overset{\text{o}}{\mathop{\text{A}}}\,\] |
| D. | \[\text{35-50}\overset{\text{o}}{\mathop{\text{A}}}\,\] |
| Answer» C. \[\text{50-60}\overset{\text{o}}{\mathop{\text{A}}}\,\] | |
| 3150. |
Membrane protein [AMU 2005] |
| A. | Works as recipient for informal moelcules |
| B. | Works as recipient for transportation |
| C. | Helps in cell recognisation |
| D. | Does all the above works |
| Answer» E. | |