Practice

Question 101

Pericycle in roots is responsible for

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Correct answer: (A) formation of lateral roots

1 marks · 2023 · Set A

Question 102

The disease produced by the fungus Ustilago is known as smut because

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Correct answer: (A) they produce a sooty mass of spores

1 marks · 2023 · Set A

Question 103

A plasmid is used as a carrier because

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Correct answer: (A) it has antibiotic-resistance genes

1 marks · 2023 · Set A

Question 104

Yeast produces an enzyme complex responsible for fermentation. This complex is

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Correct answer: (C) zymase

1 marks · 2023 · Set A

Question 105

If the diploid number of an angiosperm plant is 24, the numbers of chromosomes in the pollen grain, endosperm and integument, respectively, are

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Correct answer: (B) 12, 36, 24

1 marks · 2023 · Set A

Question 106

When the pollen tube enters by the integuments, the process is called

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Correct answer: (B) mesogamy

1 marks · 2023 · Set A

Question 107

A circular DNA molecule occurs in

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Correct answer: (D) More than one of the above

1 marks · 2023 · Set A

Question 108

Which one is the largest unicellular organism?

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Correct answer: (C) Acetabularia

1 marks · 2023 · Set A

Question 109

Which of the following is not a purpose of transpiration?

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Correct answer: (B) Prevents loss of water

1 marks · 2023 · Set A

Question 110

The spindle fibre contracts in

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Correct answer: (C) anaphase II

1 marks · 2023 · Set A

Question 111

Which of the following requires carrier molecules during transport through the plasma membrane?

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Correct answer: (D) More than one of the above

1 marks · 2023 · Set A

Question 112

How many types of genotypes are formed in the F₂ progeny obtained from self-pollination of a dihybrid F₁?

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Correct answer: (C) 9

1 marks · 2023 · Set A

Question 113

Which bacterium converts ammonium salts into nitrite?

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Correct answer: (B) Nitrosomonas

1 marks · 2023 · Set A

Question 114

Racker particles are found in

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Correct answer: (B) mitochondria

1 marks · 2023 · Set A

Question 115

Helotism is a term used for the symbiosis of

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Correct answer: (B) algae and fungi

1 marks · 2023 · Set A

Question 116

Lenticular transpiration takes place in

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Correct answer: (D) More than one of the above

1 marks · 2023 · Set A

Question 117

An example of a parasitic plant that is also strictly epiphytic is

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Correct answer: (B) Viscum

1 marks · 2023 · Set A

Question 118

Which of the following is an asexual mode in bryophytes?

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Correct answer: (D) More than one of the above

1 marks · 2023 · Set A

Question 119

The archegonia of Funaria is distinguished from that of Pinus by the structure of the

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Correct answer: (D) More than one of the above

1 marks · 2023 · Set A

Question 120

The pigments phycocyanin and phycoerythrin are found in

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Correct answer: (D) More than one of the above

1 marks · 2023 · Set A

Question 121

Enzymes have a very narrow optimum for

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Correct answer: (C) pH

1 marks · 2023 · Set A

Question 122

The most abundant intracellular cation is

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Correct answer: (A) K⁺

1 marks · 2023 · Set A

Question 123

Which one of the following is wrongly matched?

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Correct answer: (B) Puccinia—Smut

1 marks · 2023 · Set A

Question 124

Synthesis of food in the C₄ pathway occurs in the chlorophyll of

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Correct answer: (C) bundle sheath

1 marks · 2023 · Set A

Question 125

The common characteristic between bryophytes and pteridophytes is

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Correct answer: (C) water for fertilization

1 marks · 2023 · Set A

Question 126

Which of the following pairs is not correctly matched?

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Correct answer: (B) Gibberellic acid—Leaf fall

1 marks · 2023 · Set A

Question 127

Which of the following is a flagellated alga?

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Correct answer: (A) Chlamydomonas

1 marks · 2023 · Set A

Question 128

The amino-acid binding site of tRNA is

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Correct answer: (C) −CCA 3′ end

1 marks · 2023 · Set A

Question 129

Total ATP production during the EMP pathway is

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Correct answer: (A) 8 ATP molecules

1 marks · 2023 · Set A

Question 130

Ectophloic siphonostele is found in

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Correct answer: (E) None of the above

1 marks · 2023 · Set A

Question 131

The most primitive member in which roots are not present is

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Correct answer: (A) Psilotum

1 marks · 2023 · Set A

Question 132

The arrangement of chromosomes in decreasing order of length is termed

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Correct answer: (A) idiogram

1 marks · 2023 · Set A

Question 133

What is common to all three—Funaria, Dryopteris and Ginkgo?

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Correct answer: (B) Presence of archegonia

1 marks · 2023 · Set A

Question 134

A true nucleus is absent in

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Correct answer: (E) None of the above

1 marks · 2023 · Set A

Question 135

Which one of the following statements is wrong?

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Correct answer: (C) Mannitol is stored food in Rhodophyceae.

1 marks · 2023 · Set A

Question 136

Krebs’ cycle is called

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Correct answer: (D) More than one of the above

1 marks · 2023 · Set A

Question 137

Kappa particles are related to

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Correct answer: (B) cytoplasmic inheritance

1 marks · 2023 · Set A

Question 138

Mark the gymnosperm plant in which archegonia are absent.

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Correct answer: (B) Gnetum

1 marks · 2023 · Set A

Question 139

Organisms separated by geographical barriers are termed

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Correct answer: (B) allopatric population

1 marks · 2023 · Set A

Question 140

A hydrophyte with both hydrophytic and xerophytic traits is

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Correct answer: (C) Vallisneria

1 marks · 2023 · Set A

Question 141

The most resistant biological material is

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Correct answer: (C) sporopollenin

1 marks · 2023 · Set A

Question 142

The resin duct of a gymnospermous stem is an example of a

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Correct answer: (B) schizogenous cavity

1 marks · 2023 · Set A

Question 143

An example of the Pasteur effect is

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Correct answer: (B) Saccharomyces

1 marks · 2023 · Set A

Question 144

Cocaine interferes with the transport of which neurotransmitter?

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Correct answer: (C) Dopamine

1 marks · 2023 · Set A

Question 145

The walking fern is so named because

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Correct answer: (C) it propagates vegetatively by its leaf tips

1 marks · 2023 · Set A

Question 146

The polyembryony seen in Cycas is

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Correct answer: (A) potential true polyembryony

1 marks · 2023 · Set A

Question 147

Which of the following is a saprophytic angiosperm?

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Correct answer: (B) Neottia

1 marks · 2023 · Set A

Question 148

The endosperm of a gymnosperm is

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Correct answer: (C) haploid

1 marks · 2023 · Set A

Question 149

Which one of the following is considered the pioneer community in a xerarch succession?

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Correct answer: (C) Lichen stage

1 marks · 2023 · Set A

Question 150

Roots are absent in

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Correct answer: (D) More than one of the above

1 marks · 2023 · Set A

TRE2 — Language General Studies And Botany