Tag: asexual modes of reproduction

Questions Related to asexual modes of reproduction

Clones do not appear during.

reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation

  1. Cuttings

  2. Budding

  3. Grafting

  4. Seed propagation

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Correct Option: D

Assertion: Clones are produced by sexual reproduction and same sexual process.

Reason: These are prepared by group of cells descended from many cells or by inbreeding of a heterozygous line

reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: D
Explanation:

Clones are asexually produced. These have same genotype and phenotype like parent.

So, the correct answer is 'If both the assertion and reason are false'

Choose the most appropriate option:
Clones of animals are being produced through the practice of-

reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation

  1. genetics

  2. ecology

  3. embryology

  4. biotechnology

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Correct Option: A

Match column I with column II and select the correct option from the codes given.

Column I Column II
A. Planaria (i) Binary fission
B. Fungi (ii) Asexual spores
C. Yeast (iii) Budding
D. Amoeba (iv) True regeneration
(v) Fragmentation
reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation

  1. $A-(i), B-(ii), C-(iii), D-(iv)$

  2. $A-(iv), B-(ii), (v), C-(iii), D-(i)$

  3. $A-(ii), B-(v), C-(i), D-(iv)$

  4. $A-(v), B-(ii), (i), C-(iii), D-(iv)$

Show answer
Correct Option: B
Explanation:
 Column I  Column II
 A. Planaria  (iv) True regeneration
B.  Fungi  (ii) Asexual spores (v) Fragmentation
C. Yeast  (iii) Budding
 D. Amoeba  (I) Binary fission
   

Correct match following are given in table.

So the correct option is "A-(iv), B-(ii),(v), C-(iii), D-(i)".

The phenomenon observed in some plants where in parts of the sexual apparatus is used for forming embryos without fertilisation is called.

reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation

  1. Parthenocarpy

  2. Apomixis

  3. Vegetative propagation

  4. Sexual reproduction

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Correct Option: B
Explanation:

Apomixis is the term given to any phenomenon that leads to formation of embryo wherein parts of the sexual apparatus are used, but without fertilisation. Fertilisation is also absent in vegetative propagation, but parts of sexual apparatus are not involved. An example of apomixis is Citrus.

Cup-shaped chloroplast is present in

reproduction in angiospermic plants artificial vegetative propagation asexual modes of reproduction common modes of vegetative propagation

  1. Spirogyra

  2. Chlamydomonas

  3. Ulothrix

  4. Chara

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Correct Option: B
Explanation:

A single cup-shaped chloroplast is characteristic of Chlamydomonas. It occupies the major portion of cell and is thick at the base while its sides are relatively thin and projected upward.

Rules of conduct that may be used to regulate our activities in relation to the biological world is called ___________.

botany biotechnology and its applications biotechnological regulations pcr asexual modes of reproduction

  1. Bioethics

  2. Biowar

  3. Biopatent

  4. Biopiracy

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Correct Option: A
Explanation:

Bioethics may be viewed as the set of standards that may be used to regulate various activities based on their effects on the biological world. This is because biotechnology has aroused social as well as political concerns, which have ranged from biotechnology being unnatural to detrimental to biodiversity.

Which of the following group of preservatives prevent fat/oil containing food from developing a foul smell?

botany biotechnology and its applications biotechnological regulations pcr asexual modes of reproduction

  1. Flavourants

  2. Colorants

  3. Sweeteners

  4. Antioxidants

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Correct Option: D
Explanation:

Antioxidants prevent or slow down the oxidation of fat/oil which otherwise go rancid to emit a foul odor. This they are used as preservatives in oil or fat containing food.

So, the correct option is 'Antioxidants'.

.......... was the first commercially grown genetically engineered food to be granted a license for human consumption.

botany biotechnology and its applications biotechnological regulations pcr asexual modes of reproduction

  1. Bt Cotton

  2. Flavr Savr tomato

  3. Bt brinjal

  4. Golden rice

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Correct Option: B
Explanation:
A.Bt cotton - a transgenic plant with a Cry gene to produce Bt protein.
B.Flavr Savr tomato - a transgenic plant have storage ability
C.Bt brinjal - a transgenic plant with a Cry gene to produce Bt protein.
C.Golden rice - a transgenic plant with more amount of vitamin C.
So the correct option is 'Flavr Savr tomato ' .

Saffron and beetroot plant extract can be used as

botany biotechnology and its applications biotechnological regulations pcr asexual modes of reproduction

  1. Natural additives to enhance the flavor of food

  2. Natural additives to enhance the color of food

  3. Artificial additives to enhance the flavor of food

  4. Artificial additives to enhance the colour of food

Show answer
Correct Option: B
Explanation:

Saffron is extracted from the dried stigmas of the saffron plant . It's main use is in the spice industry .While , the Beetroot is the taproot of the bet plant . It is widely used as in food and salads . Although these are also used as a medicine and a flavouring agent . 

So the correct option is ' Natural additives to enhance the colour of food ' .