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Botany (GATE)

Description: Biochemistry
Number of Questions: 15
Created by:
Tags: Botany Life Sciences Plants Dye Medicinal plants Economic botany fungi algae biofertilizer photosynthesis plant diseases reproduction GATE CSIR NET AIPMT AIIMS medical entrance Economic Botany Diseases of Important Crops Caused by Fungi Economic Importance of Algae Photosynthesis Morphogenesis & Development Plant Systematics
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A pair of dye-yielding plants of family Fabaceae is

  1. Oldenlandia umbellata and Carthamus tinctorius

  2. Indigofera tinctoria and Carthamus tinctorius

  3. Oldenlandia umbellata and Clitoria ternatea

  4. Indigofera tinctoria and Clitoria ternatea

  5. Carthamus tinctorius and Tagetus erecta

Show answer
Correct Option: D
Explanation:

Indigofera tinctoria and Clitoria ternatea are blue dye-yielding plants of Fabaceae family.

Which of the following is a group of brown algae?

  1. Volvox, Chlamydomonas, Chara

  2. Laminaria, Fucus, Dictyota

  3. Fucus, Chlamydomonas, Polysiphonia

  4. Dictyota, Porphyra, Chara

  5. Volvox, Porphyra, Polysiphonia

Show answer
Correct Option: B
Explanation:

Laminaria, Fucus, Dictyota: All are brown algae.

Which of the following plants is used as a biofertiliser?

  1. Cercospora personata

  2. Gardenia jasminoides

  3. Azolla pinnata

  4. Abelmoschus esculentus

  5. Gossypium barbadense

Show answer
Correct Option: C
Explanation:

Azolla is an aquatic fern, which s used as a biofertiliser in rice fields. 

The mechanism of phosphorylation in chloroplasts was discovered by

  1. Emerson and Arnold

  2. Engelmann

  3. Arnon

  4. Ruben and Kamen

  5. Hill and Bendal

Show answer
Correct Option: C
Explanation:

In 1954, Arnon discovered the mechanism of phosphorylation in chloroplasts.

A set of members of phaeophyceae is

  1. Volvox, Ulothrix, Spirogyra and Chara

  2. Dictyota, Laminaria, Sargassum and Fucus

  3. Chlamydomonas, Ectocarpus, Gelidium and Volvox

  4. Polysiphonia, Porphyra, Gracilaria and Gelidium

  5. Chara, Laminaria, Sargassum and Gelidium

Show answer
Correct Option: B
Explanation:

Dictyota, Laminaria, Sargassum and Fucus: All are members of phaeophyceae.

Which of the following belong to class Ascomycetes?

  1. Albugo and Mucor

  2. Aspergillus and Penicillium

  3. Agaricus and Puccinia

  4. Albugo and Puccinia

  5. Aspergillus and Mucor

Show answer
Correct Option: B
Explanation:

Aspergillus and Penicillium belong to class Ascomycetes.

Which of the following is a pair of C3 plants?

  1. Zea mays and Saccharum officinarum

  2. Hordeum vulgare and Oryza sativa

  3. Crassula ovata and Hordeum vulgare

  4. Crassula ovata and Zea mays

  5. Saccharum officinarum and Oryza sativa

Show answer
Correct Option: B
Explanation:

Hordeum vulgare and Oryza sativa: Both are C3 plants.

Arrange the following in developmental sequence for angiosperms.

  1. Sporogenous tissue
  2. Pollen mother cell
  3. Pollen grain
  4. Microspore tetrad
  5. Male gamete

  1. 1 → 2 → 3 → 4 → 5

  2. 1 → 2 → 4 → 3 → 5

  3. 1 → 3 → 4 → 2 → 5

  4. 1 → 4 → 3 → 2 → 5

  5. 1 → 4 → 2 → 3 → 5

Show answer
Correct Option: B
Explanation:

Correct development sequence is as follows: Sporogenous tissue → Pollen mother cell → Microspore tetrad → Pollen grain → Male gamete

Which of the following is a pair of brown algae?

  1. Dictyota and Sargassum

  2. Gracilaria and Anabaena

  3. Ulothrix and Spirogyra

  4. Anabaena and Spirogyra

  5. Gracilaria and Ulothrix

Show answer
Correct Option: A
Explanation:

Dictyota and Sargassum: Both are brown algae.

A pair of algae with multicellular colonial thallus organisation is

  1. Gonium and Chlorella

  2. Chlamydomonas and Spirogyra

  3. Chlamydomonas and Chlorella

  4. Volvox and Gonium

  5. Ulothrix and Spirogyra

Show answer
Correct Option: D
Explanation:

Volvox and Gonium: Both have multicellular colonial thallus organisation.

Match the columns:

 
Column I
Column II
P. Fusarium oxysporum 1. Root rot of sweet potato
Q. Ustilago tritici 2. Wilt of cotton
R. Claviceps purpurea 3. Loose smut of wheat
S. Rhizopus stolonifer 4. Ergot of rye

  1. P - 1; Q - 2; R - 3; S - 4

  2. P - 2; Q - 1; R - 3; S - 4

  3. P - 2; Q - 3; R - 4; S - 1

  4. P - 3; Q - 2; R - 1; S - 4

  5. P - 3; Q - 2; R - 4; S - 1

Show answer
Correct Option: C
Explanation:

Correct matching is P - 2; Q - 3; R - 4; S - 1.

Which of the following is not a fungal plant disease?

  1. Citrus canker

  2. Potato late blight

  3. Red rot disease of sugarcane

  4. Corn smut

  5. Wheat leaf rust

Show answer
Correct Option: A
Explanation:

Citrus canker is a disease affecting citrus species that is caused by the bacterium Xanthomonas axonopodis.

Which of the following is a set of imperfect fungi (deuteromycetes)?

  1. Mucor, Rhizopus and Albugo

  2. Aspergillus, Claviceps and Neurospora

  3. Agaricus, Ustilago and Puccinia

  4. Alternaria, Colletotrichum and Trichoderma

  5. Mucor, Claviceps and Puccinia

Show answer
Correct Option: D
Explanation:

Deuteromycetes are commonly known as imperfect fungi because only the asexual or vegetative phases of these fungi are known. Some examples are Alternaria, Colletotrichum and Trichoderma.

Which of the following is the correct molecular formula of chlorophyll a?

  1. C55H70O6N4Mg

  2. C55H70O5N4Mg

  3. C54H70O6N4Mg

  4. C55H72O5N4Mg

  5. C35H30O5N4Mg

Show answer
Correct Option: D
Explanation:

Molecular formula of chlorophyll a is C55H72O5N4Mg.

Match the columns:

 
Column I
Column II
P. Cotton 1. Malvaceae
Q. Wheat 2. Poaceae
R. Mango 3. Anacardiaceae
S. Mustard 4. Cruciferae

  1. P - 1; Q - 2; R - 3; S - 4

  2. P - 1; Q - 3; R - 2; S - 4

  3. P - 2; Q - 3; R - 1; S - 4

  4. P - 2; Q - 3; R - 4; S - 1

  5. P - 3; Q - 1; R - 4; S - 1

Show answer
Correct Option: A
Explanation:

Correct matching is P - 1; Q - 2; R - 3; S - 4.

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