MCQ Bank

A major drawback associated with gene sanctuaries is the high cost and difficulty involved in their continuous maintenance and protection in natural habitats.

BT401 Final Term AI Solved

Q141

What is Dimethyl sulfoxide used for?

A) Chelating agent
B) A gelling agent
C) Cryoprotectant
D) An Alkylating agent

AI Explanation

Dimethyl sulfoxide (DMSO) is widely used as a cryoprotective agent to protect cells from ice crystal damage during freezing processes.

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Q142

Some larger soil-dwelling invertebrates, such as earthworms, ants and termites, have been described as “ecosystem____________”.

A) Farmers
B) doctors
C) engineers
D) Makers

AI Explanation

Soil-dwelling invertebrates like earthworms, ants, and termites are commonly referred to as ecosystem engineers because they physically modify their habitats and improve soil properties.

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Q143

Germplasm Conservation under natural condition is called_____________

A) ex- suito conservation
B) Absolute cultivars
C) Gene Bank
D) In-suito conservation

AI Explanation

In-situ (in-suito) conservation refers to the preservation of ecosystems and natural habitats, maintaining viable populations of species in their natural surroundings.

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Q144

The first genomic libraries were cloned in _______________

A) Plasmid
B) Bacteria
C) Plants
D) Human

AI Explanation

The first genomic libraries were successfully constructed and cloned using bacterial host systems, particularly bacteriophage vectors and plasmids in Escherichia coli.

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Q145

The natural protected area used for the conservation of genetic diversity is called_____________

A) Gene bank
B) Gene sanctuaries
C) Habitat
D) Gene Pool

AI Explanation

Gene sanctuaries are natural protected areas specifically designated for the conservation and protection of genetic diversity within wild populations of plant or animal species.

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Q146

__________ is an example of an ex-situ conservation

A) National park
B) Seed bank
C) Wildlife sanctuary
D) Sacred groves

AI Explanation

Seed banks store plant seeds outside their natural habitats, making them a classic example of ex-situ conservation.

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Q147

__________ is not generally seen in biodiversity hotspots

A) Lesser interspecific competition
B) Loss of diversity
C) Species richness
D) Endemism

AI Explanation

Biodiversity hotspots are characterized by high species richness and endemism, which typically results in intense interspecific competition rather than lesser competition.

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Q148

What is Callus?

A) A tissue that grows from an embryo
B) Tissues that grow to form an embryoid
C) An insoluble carbohydrate
D) An unorganised actively dividing the mass of cells maintained in a culture

AI Explanation

A callus is an unorganized, proliferating mass of plant cells formed on nutrient medium from cultured explants during tissue culture.

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Q149

Gene sanctuaries are the type of ___________

A) Absolute cultivars
B) ex-suito conservation
C) In-suito conservation
D) Gene Bank

AI Explanation

Gene sanctuaries represent a form of in-situ (in-suito) conservation since target species and their genetic variants are preserved within their natural environments.

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Q150

The quality of DNA extracted from plant specimens is dependent on___________

A) the condition of the specimen before storage
B) the storage environment
C) the duration of storage
D) All of the given

AI Explanation

The final yield and quality of DNA extracted from plant specimens are heavily influenced by pre-storage condition, storage environment, and duration of storage.

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Q151

The natural and protected habitat used for the conservation of genetic diversity is called ______-

A) Gene sanctuary
B) Gene bank
C) Genetic drift
D) Gene pool

AI Explanation

A gene sanctuary is a designated natural and protected habitat specifically utilized to conserve the genetic diversity of wild species.

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Q152

Invertebrates accounts for ____________ % of the animals on earth

A) 95
B) 99
C) 87
D) 92

AI Explanation

Invertebrates represent an overwhelming majority of animal life on Earth, accounting for approximately 99 percent of all known animal species.

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Q153

Perhaps the most neglected group of all in research, in farming practices, and in policies and strategies for agriculture and biodiversity are the soil-dwelling ______________.

A) Bacteria
B) funji
C) invertebrates
D) Viruses

AI Explanation

Soil-dwelling invertebrates represent a crucial yet frequently neglected group in ecological research, farming practices, and agricultural policies.

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Q154

Most invertebrates are expected to change their geographical distribution _________

A) To avoid hunger
B) To control body temperature
C) In response to climate change
D) In search of partners

AI Explanation

As global temperatures rise and habitats shift, most invertebrate species are expected to alter their geographical distributions in response to climate change.

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Q155

DNA of plants can be preserved by rapid drying of plant samples with the help of _____________ material

A) Calcium carbonate
B) Silica gel
C) DMSO
D) Normal saline

AI Explanation

Silica gel is widely used as a desiccant for the rapid drying of plant specimens, which helps preserve the integrity of plant DNA for subsequent molecular extraction.

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Q156

Considering the better studied mammals and birds, 100% of the currently described species have been evaluated for their conservation statuses and, out of these, _______out of 9,990 bird species are considered to be endangered.

A) 12%
B) 25%
C) 105
D) 21%

AI Explanation

Conservation assessments indicate that approximately 12% of the evaluated 9,990 bird species face extinction risks and are classified as endangered.

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Q157

Almost 35 % of world food production comes from crops that are dependent on________________

A) Insect pollination
B) Water availability
C) Seed germination
D) Soil fertility

AI Explanation

Roughly 35% of total global food production depends directly on crops that rely on insect pollinators for successful fertilization and yield.

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Q158

In 1984, gene sanctuaries for conservation of wild relatives of coffee was setup in ___________

A) India
B) Afghanistan
C) Pakistan
D) Ethiopia

AI Explanation

In 1984, dedicated gene sanctuaries were established in Ethiopia to protect and conserve the natural wild genetic relatives of coffee.

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Q159

Gene banks are also known as _____________

A) Seed banks
B) Germplasm banks
C) All given
D) Field gene banks

AI Explanation

Gene banks encompass several types of conservation facilities, including seed banks, germplasm banks, and field gene banks, designed to maintain diverse genetic lines.