Which one of the following plastids is involved in storage of proteins in maize?
1. Chromoplast
2. Chloroplast
3. Amyloplast
4. Aleuroplast
Subtopic: Â Plastids |
 82%
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Many ribosomes may associate with one mRNA to form
1. Polyhedral bodies
2. Ergasorne or Polysome
3. Nucleosome
4. Plastidorne
1. Polyhedral bodies
2. Ergasorne or Polysome
3. Nucleosome
4. Plastidorne
Subtopic: Â Ribosome and Inclusion Bodies |
 82%
From NCERT
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Which one of the following functions is not associated with microtubules?
1. Help in anaphasic movement of chromosomes
2. Form the cytoskeleton of cilia and flagella
3. Help in pseudopodia formation
4. Spindle and astral ray formation
1. Help in anaphasic movement of chromosomes
2. Form the cytoskeleton of cilia and flagella
3. Help in pseudopodia formation
4. Spindle and astral ray formation
Subtopic: Â Cytoskeleton |
 63%
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Centrioles have
1. 9 + 2 arrangement of microtubules
2. 9 peripheral doublet microtubules
3. 2 centrally located microtubules
4. An organisation like the cartwheel
1. 9 + 2 arrangement of microtubules
2. 9 peripheral doublet microtubules
3. 2 centrally located microtubules
4. An organisation like the cartwheel
Subtopic: Â Centrosomes |
 64%
From NCERT
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In flagella and cilia, the number of doublets present in the peripheral region of axoneme are
1. 18
2. 20
3. 9
4. 2
1. 18
2. 20
3. 9
4. 2
Subtopic: Â Cytoskeleton |
 76%
From NCERT
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Match the column I with column II
1. a(ii), b(i), c(iv), d(iii)
2. a(ii), b(i), c(iii), d(iv)
3. a(iii), b(i), c(iv), d(ii)
4. a(i), b(ii), c(iv), d(iii)
| Column I | Column II | ||
| a | Fat storage | (i) | Tubulin |
| b | Cilia | (ii) | Elaioplast |
| c | Mitochondria | (iii) | Contractile |
| d | Microfilaments | (iv) | Oxysomes |
2. a(ii), b(i), c(iii), d(iv)
3. a(iii), b(i), c(iv), d(ii)
4. a(i), b(ii), c(iv), d(iii)
Subtopic: Â Plastids |Â Mitochondria |
 78%
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Karyotheca or nuclear membrane is absent in
1. Nostoc
2. Rhizobium
3. Drosophila
4. Both (1) & (2)
1. Nostoc
2. Rhizobium
3. Drosophila
4. Both (1) & (2)
Subtopic: Â Prokaryotic Cell Organisation |Â Details of Prokaryotic Cell Structure |
 78%
From NCERT
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Choose odd one out w.r.t. nuclear membrane.
1. Inner membrane is smooth
2. Cytoplasmic surface of nuclear envelope may bear ribosomes
3. Outer membrane bears 70S ribosomes
4. Perinuclear space is 10 to 50 nm
1. Inner membrane is smooth
2. Cytoplasmic surface of nuclear envelope may bear ribosomes
3. Outer membrane bears 70S ribosomes
4. Perinuclear space is 10 to 50 nm
Subtopic: Â Nucleus |
 60%
From NCERT
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Kinetochore is associated with
1. Primary constriction
2. Secondary constriction
3. Satellite
4. More than one option is correct
1. Primary constriction
2. Secondary constriction
3. Satellite
4. More than one option is correct
Subtopic: Â Nucleus: Chromosomes |
 66%
From NCERT
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Subtopic: Â Nucleus: Chromosomes |
 52%
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