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NEET Botany PYQs
Class XI & Class XII
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🧬 Botany
📘 Class XI & XII
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408 questions in Botany
Which one of the following is the most abundant
protein in the animals?
A
Haemoglobin
B
Collagen
C
Lectin
D
Insulin
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Identify the substances having glycosidic bond and
peptide bond, respectively in their structure:
A
Chitin, cholesterol
B
Glycerol, trypsin
C
Cellulose, lecithin
D
Inulin, insulin
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Identify the basic amino acid from the following.
A
Tyrosine
B
Glutamic Acid
C
Lysine
D
Valine
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Match the following:
(A)Inhibitor of catalytic activity
(I)Ricin
(B)Possess peptide bonds
(II)Malonate
(C)Cell wall material in fungi
(III)Chitin
(D)Secondary metabolite
(IV)Collagen
Choose the correct option from the following:
A
(A)-(II), (B)-(IV), (C)-(III), (D)-(I)
B
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
C
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
D
(A)-(II), (B)-(III), (C)-(I), (D)-(IV)
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Match the following:
List-I
List-II
(A)Aquaporin
(I)Amide
(B)Asparagine
(II)Polysaccharide
(C)Abscisic acid
(III)Polypeptide
(D)Chitin
(IV)Carotenoids
Select the correct option:
A
(A)-(III), (B)-(I), (C)-(IV), (D)-(II)
B
(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
C
(A)-(II), (B)-(I), (C)-(IV), (D)-(III)
D
(A)-(III), (B)-(I), (C)-(II), (D)-(IV)
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Attachment of spindle fibers to kinetochores of
chromosomes becomes evident in:
A
Anaphase
B
Telophase
C
Prophase
D
Metaphase
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Explanation: In mitosis, the kinetochores on chromosomes attach to spindle microtubules as the chromosomes align. This attachment becomes evident when the chromosomes align at the middle of the cell, i.e., in metaphase, with kinetochores held on by spindle fibers from opposite poles. Thus, the visible connection between kinetochores and spindle fibers is most evident during metaphase of cell division, as per NCERT description.
🧠 Did You Know? Metaphase is characterized by chromosomes lining up at the equator, with kinetochores attached to microtubules from both poles.
💡 NCERT Memory Line: “Chromosomes move to the equator and become arranged at metaphase plate; spindle fibers attach to kinetochores.”
In a mitotic cycle, the correct sequence of phases is:
A
S, G1 , G2 , M
B
G1 , S, G2 , M
C
M, G1 , G2 , S
D
G1 , G2 , S, M
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Match the following events that occur in their respective phases of cell cycle and select the correct option:
(A)G1 phase
(I)Cell grows and organelle
duplication
(B)S phase
(II)DNA replication and chromosome
duplication
(C)G2 phase
(III)Cytoplasmic growth
(D)Metaphase in M-phase
(IV)Alignment of chromosomes
A
(A)-(II), (B)-(III), (C)-(IV), (D)-(I)
B
(A)-(III), (B)-(IV), (C)-(I), (D)-(II)
C
(A)-(IV), (B)-(I), (C)-(II), (D)-(III)
D
(A)-(I), (B)-(II), (C)-(III), (D)-(IV)
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During Meiosis 1, in which stage synapsis takes place?
A
Pachytene
B
Zygotene
C
Diplotene
D
Leptotene
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Identify the correct statement with regard to
G1 phase (Gap 1) of interphase.
A
DNA synthesis or replication takes place.
B
Reorganisation of all cell components takes place.
C
Cell is metabolically active, grows but does not replicate its DNA.
D
Nuclear Division takes place.
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