NEET 2020 Biology Questions and Answers (81-90)

 81. Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of

(1) G1 phase

 (2) S phase

(3) G2 phase 

(4) M phase

82. Identify the correct statement with reference to human digestive system.

(1) Serosa is the innermost layer of the alimentary canal

(2) IIeum is a highly coiled part

(3) Vermiform appendix arises from duodenum

(4) IIeum opens into small intestine

83. The plant parts which consist of two generations - one within the other

(a) Pollen grains inside the anther

(b) Germinated pollen grain with two male gametes

(c) Seed inside the fruit

(d) Embryo sac inside the ovule

(1) (a), (b) and (c) 

(2) (c) and (d)

(3) (a) and (d) 

(4) (a) only

84. Dissolution of the synaptonemal complex occurs during

(1) Zygotene

 (2) Diplotene

(3) Leptotene 

(4) Pachytene

85. Match the following columns and select the correct option.

Column-I                          Column-II

(a) Organ of Corti               (i) Connects middle ear and pharynx

(b) Cochlea                         (ii) Coiled part of the labyrinth

(c) Eustachian tube            (iii) Attached to the oval window

(d) Stapes (iv) Located on the basilar membrane

(a) (b) (c) (d)

(1) (iii) (i) (iv) (ii)

(2) (iv) (ii) (i) (iii)

(3) (i) (ii) (iv) (iii)

(4) (ii) (iii) (i) (iv)

86. The ovary is half inferior in :

(1) Mustard 

(2) Sunflower

(3) Plum 

(4) Brinjal


NEET 2020 Biology Questions and Answers (81-90)

87. Identify the basic amino acid from the 
following.

(1) Glutamic Acid 

(2) Lysine

(3) Valine 

(4) Tyrosine

88. Match the following columns and select the correct option.

Column-I                       Column-II

(a) Eosinophils (i) Immune response

(b) Basophils (ii) Phagocytosis

(c) Neutrophils (iii) Release histaminase, destructive enzymes

(d) Lymphocytes (iv) Release granules containing histamine

  (a) (b) (c) (d)

(1) (iv) (i) (ii) (iii)

(2) (i) (ii) (iv) (iii)

(3) (ii) (i) (iii) (iv)

(4) (iii) (iv) (ii) (i)

89. Match the following

(a) Inhibitor of (i) Ricin catalytic activity

(b) Possess peptide bonds (ii) Malonate

(c) Cell wall material in fungi (iii)Chitin in fungi

(d) Secondary Metabolite (iv) Collagen 

Choose the correct option from the following

(a) (b) (c) (d)

(1) (iii) (i) (iv) (ii)

(2) (iii) (iv) (i) (ii)

(3) (ii) (iii) (i) (iv)

(4) (ii) (iv) (iii) (i)

90. Identify the correct statement with regard to G1 phase (Gap 1) of interphase.

(1) Reorganisation of all cell components takes place.

(2) Cell is metabolically active, grows but does not replicate its DNA.

(3) Nuclear Division takes place.

(4) DNA synthesis or replication takes place.

Answers:
81. (4) M phase
82. (2) IIeum is a highly coiled part
83. (3) (a) and (d) 
84. (2) Diplotene
85. (2) (iv) (ii) (i) (iii)
86. (3) Plum 
87. (2) Lysine
88. (4) (iii) (iv) (ii) (i)
89. (4) (ii) (iv) (iii) (i)
90. (2) Cell is metabolically active, grows but does not replicate its DNA.

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