M.C.Q [1M]

MCQ 11 Mark

Among the ecosystem mentioned below, where can one find maximum biodiversity?

A
Desert
B
Coral reefs
C
Alpine meadows
D
Mangroves

Answer

(b) : Coral reefs
Explanation: Coral reefs are believed by many to have the highest biodiversity of any ecosystem on the planet even more than a tropical rainforest. Occupying less than one percent of the ocean floor, coral reefs are home to more than twenty-five percent of marine life.

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MCQ 21 Mark

The diagram shows an important concept in the genetic implication of DNA. Fill in the blanks A to C.

A
A - translation B - transcription C - Erevin Chargaff
B
A-translation B - extension C - Rosalind Franklin
C
A - transcription B - translation C - Francis Crick
D
A - transcription B - replication C - James Watson

Answer

(c) : A - transcription B - translation C - Francis Crick
Explanation: A transcription B-translation C - Francis Crick

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MCQ 31 Mark

The phenomenon involved in the formation of female gametophyte is known as:

A
Hydrolysis
B
Megasporogenesis
C
Multisporogenesis
D
Microsporogenesis

Answer

(b) : Megasporogenesis
Explanation: The process of formation of female gametophyte inside the ovary by meiotic and mitotic division is called megasporogenesis.

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MCQ 41 Mark

Which of the following is true for a Plasmid -

A
It can be replicate independently
B
It cannot replicate
C
It lies together with chromosomes
D
It shows independent assortment

Answer

(d) : It shows independent assortment
Explanation: It shows independent assortment

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MCQ 51 Mark

DNA replication takes place during:

A
S-phase
B
G₁ phase
C
G₂ phase
D
Prophase

Answer

(a) : S-phase
Explanation: S-phase

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MCQ 61 Mark

Rosie's milk is enriched nutritionally as it has:

A
Beta lactalbumin
B
Human gene alpha lactalbumin
C
lactose
D
Vitamin A

Answer

(b) : Human gene alpha lactalbumin
Explanation: The first transgenic cow Rosie produced human protein-enriched milk. The milk contained Alpha-lactalbumin which was nutritionally more balanced than normal cow milk for babies.

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MCQ 71 Mark

The natural parthenogenesis is found in:

A
Drosophila
B
Sharks
C
Honey bee
D
Housefly

Answer

(c) : Honey bee
Explanation: Honey bee

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MCQ 81 Mark

Which of the following restriction enzymes produces blunt ends?

A
Eco RV
B
Hind III
C
Xho1
D
Sal I

Answer

(a) : Eco RV
Explanation: Eco RV

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MCQ 91 Mark

Which one of the following plants shows very close relationships with a species of moth, where none of the two can complete its life cycle without the other?

A
Viola
B
Yucca
C
Hydrilla
D
Banana

Answer

(b) : Yucca
Explanation: Yucca

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MCQ 101 Mark

N₂-fixing bacteria in non-legume plants are:

A
Frankia
B
Aspergillus
C
Rhizobia
D
Plasmodium

Answer

(a): Frankia
Explanation: Frankia

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MCQ 111 Mark

Tapetum in pollen grains help in:

A
Provide nourishment to the young microspore mother cell
B
Help in pollen grain germination
C
Provide protection to the microspore mother cell
D
Help in the dispersal of pollen grain

Answer

(a) : Provide nourishment to the young microspore mother cell
Explanation: Tapetum is the cells surrounding the microspore mother cells. These cells provide nourishment to the young microspore mother cells.

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MCQ 121 Mark

Inthe given pedigree the shaded figures denote individuals expressing a specific trait:

Which of the following is the most probable mode of inheritance of this trait?

A
X-linked recessive transmission
B
Simple Mendelian Recessive
C
Codominant relationship of a single pair of alleles
D
X-linked dominant transmission

Answer

(a) : X-linked recessive transmission
Explanation: X-linked recessive transmission

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BIOLOGY M.C.Q [1M]

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