Genetic Diversity

Q. Standing crop means

1. Total biomass of an ecosystem in a specific area at a given time
2. Total biomass of animals in a specific area at a given time
3. Total biomass of only plants in a specific area at a given time
4. Mass of living matter at the first trophic level

Q. Baculoviruses are excellent candidates for:

1. Species-specific narrow spectrum pesticidal applications
2. Species-specific broad spectrum pesticidal applications
3. Species-specific narrow spectrum insecticidal applications
4. Species-specific broad spectrum insecticidal applications

Q.

What is variety? What is the difference between variety and species?

Q.

How do biotic and abiotic factors affect crop production?

Q. The genetic variation shown by the medicinal plant Rauwolfia vomitoria that grows in different parts of the Himalayan ranges is usually in terms of the potency and concentration of the active chemical ___ that the plant produces.

1. Quinolone
2. Reserpine
3. Ampicillin
4. Turpentine

Q. Which among the following statements regarding the biodiversity of India are incorrect?

I. It contributes around 8.1 % to the world’s species diversity
II. It is one of the 12 mega diversity countries of the world
III. India is known to be the home to 45000 different species of animals

1. II and III
2. I and III
3. Only III
4. Only I

Q. Which kind of biodiversity is exhibited by Rauwolfia vomitoria?

1. Species diversity
2. Both a and b
3. Genetic diversity
4. Ecological diversity

Q.

A plant species shows several morphological variations in response to altitudinal gradient. When grown under similar conditions of growth, the morphological variations disappear and all the variants have common morphology. What are these variants called?

Q.

Write the % of F₂ homozygous and heterozygous populations in a typical monohybrid cross?

Q. Which one of the following has the maximum genetic diversity in India?

1. Tea
2. Teak
3. Mango
4. Wheat

Q. Biopiracy of bioresources belonging to the developing nations occurs because
I - developing countries lack the traditional knowledge needed to exploit these bioresources.
II - developed countries have poor biodiversity.
III - developing nations receive a lot of monetary compensation in return.
IV - developed countries lack the traditional knowledge needed to exploit these bioresources.

1. I and II
2. II and III
3. II and IV
4. I and IV

Q.

What is true about the isolated small tribal populations?

1. Wrestlers who develop strong body muscles in their lifetime pass this character on to their progeny

2. hereditary diseases like colour blindness do not spread in the isolated population

3. there is a decline in population as boys marry girls only from their own tribe

4. there is no change in population size as they have a large gene pool

Q. Which of the following shows maximum genetic diversity in India?

1. Rice
2. Maize
3. Mango
4. Groundnut

Q.

In India, we find mangoes with different flavours, colours, fibre content, sugar content and even shelf life. Such large variation is on account of

1. Genetic diversity

2. Species diversity

3. Induced mutations

4. Hybridisation

Q.

The medicinal plant Rauwolfia vomitoria shows different levels of potency depending on which area of the Himalayan ranges you pick them up from. This is an example of _________________.

1. Sikkim

2. Assam

3. Arunachalpradesh

4. Kerala

Q. Which one of the following shows maximum genetic diversity in India?

1. Mango
2. Maize
3. Groundnut
4. Rice

Q. Differences in the potency and concentration of the different varieties of reserpine is an example of genetic diversity seen in which of the following species?

1. Datura alba
2. Rauwolfia vomitoria
3. Atropa belladonna
4. Papaver somniferum

Q. Which one of the following has the maximum genetic diversity in India?

1. Tea
2. Teak
3. Mango
4. Wheat

Q. Which of the following bodies have declared that the total number of plant and animal species described so far is slightly more than 1.5 million?

1. International Union for the Conservation of Resources
2. International Union for Conservation of Nature
3. National Union for the Conservation of Nature
4. Union for the Conservation of Nature and Natural Resources

Q. What do you understand by the term genetic diversity?

Q. The linkage map of X-chromosome of fruitfly has 66 unit with yellow body gene (y) at one end and bobbed hair (b) gene at the other end. The recombination frequency between these two gene (y and b) should be a) 66% b)greater than 50% c) less than equal to 50% d)100 %

Q. Which one of the following is a characteristic feature of cropland ecosystem?

1. Absence of soil organisms
2. Ecological succession
3. Absence of weeds
4. Least genetic diversity

Q. Which one of the following shows maximum genetic diversity in India?

1. Mango
2. Groundnut
3. Rice
4. Maize

Q. Genetic biodiversity ___ (i) ____ the accumulation of favourable traits and ____ (ii) _____ the incidence of harmful and unfavourable inherited traits.

1. (i) Reduces (ii) increases
2. (i) Does not affect (ii) reduces
3. (i) Increases (ii) does not affect
4. (i) Reduces (ii) does not affect
5. (i) Increases (ii) reduces

Q. Assertion :Genetic variation shown by the plant Rauwolfia vomitoria growing in different Himalayan ranges is very important economically. Reason: The amount and variety of alkaloids present in this plant, change both between the Rauwolfia species and between the different strains of R. vomitoria.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. According to Robert May, the global species diversity is about

1. 50 million
2. 7 million
3. 1.5 million
4. 20 million

Q. Which one of the following has maximum genetic diversity in India?

1. Teak
2. Mango
3. Wheat
4. Tea

Q. When genetically similar individuals of a population mate with each other repeatedly, it leads to ___.

1. Loss of heterozygosity
2. Gain of heterozygosity
3. Loss of homozygosity
4. Gain of homozygosity or heterozygosity

Q. Give difference between-Homozygous and Heterozygous.?

Q. The genetic variation shown by the medicinal plant Rauwolfia vomitoria that grows in different parts of the Himalayan ranges is usually in terms of the potency and concentration of the active chemical ___ that the plant produces.

1. Quinolone
2. Reserpine
3. Turpentine
4. Ampicillin