Biology Test

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Biology Test - 19

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Weekly Quiz Competition

Question 1
5 / -1

Which of the following is an example of an ex situ conservation method?

A
Establishing biosphere reserves.

B
Protecting species in their natural habitats.

C
Storing seeds in seed banks.

D
Creating protected marine areas.

Solution

"Ex situ" conservation involves conserving species outside their natural habitats, such as storing seeds in seed banks, keeping species in zoological parks, or maintaining them in botanical gardens.
Question 2
5 / -1

Match List I with List II

Choose the correct answer from the options given below:

A
(A) - (I), (B) - (II), (C) - (III), (D) - (IV)

B
(A) - (III), (B) - (II), (C) - (I), (D) - (IV)

C
(A) - (II), (B) - (I), (C) - (IV), (D) - (III)

D
(A) - (IV), (B) - (III), (C) - (II), (D) - (I)

Solution

Mendel's Law of Dominance (A) refers to the expression of one trait over the other, matching I.

Monohybrid Cross (B) is a cross between individuals differing in one trait, matching II.

Incomplete Dominance (C) occurs when neither allele is completely dominant, matching III.

Test Cross (D) is used to determine the genotype of an organism, matching IV.
Question 3
5 / -1

Match List I with List II

Choose the correct answer from the options given below:

A
(A) - (I), (B) - (II), (C) - (III), (D) - (IV)

B
(A) - (III), (B) - (II), (C) - (I), (D) - (IV)

C
(A) - (I), (B) - (IV), (C) - (III), (D) - (II)

D
(A) - (IV), (B) - (III), (C) - (II), (D) - (I)

Solution

DNA (A) has a sugar-phosphate backbone with nitrogenous bases, matching I.

RNA (B) contains uracil instead of thymine, matching II.

Nucleosome (C) is a unit of DNA packaging in eukaryotes, matching III.

Translation (D) is the process of protein synthesis, matching IV.
Question 4
5 / -1

Match List I with List II

Choose the correct answer from the options given below:

A
(A) - (I), (B) - (II), (C) - (III), (D) - (IV)

B
(A) - (IV), (B) - (I), (C) - (III), (D) - (II)

C
(A) - (III), (B) - (IV), (C) - (II), (D) - (I)

D
(A) - (I), (B) - (IV), (C) - (II), (D) - (III)

Solution

Darwin’s Finches (A) are an example of adaptive radiation, matching I.

Lamarck's Theory (B) involves inheritance of acquired traits, matching II.

Hardy-Weinberg Equilibrium (C) describes gene pool stability, matching III.

Convergent Evolution (D) involves similar traits evolving independently in different species, matching IV.
Question 5
5 / -1

Match List I with List II

Choose the correct answer from the options given below:

A
(A) - (III), (B) - (II), (C) - (I), (D) - (IV)

B
(A) - (IV), (B) - (III), (C) - (II), (D) - (I)

C
(A) - (I), (B) - (II), (C) - (III), (D) - (IV)

D
(A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Solution

Typhoid (A) is caused by Salmonella typhi and is transmitted through contaminated food and water, matching III.

Tuberculosis (B) is caused by Mycobacterium tuberculosis and primarily affects the lungs, matching II.

Malaria (C) is caused by Plasmodium, transmitted by the Anopheles mosquitoes, matching I.

Amoebiasis (D) is caused by Entamoeba histolytica and results in dysentery, matching IV.
Question 6
5 / -1

_______ equivalent to male scrotum.

A
Vaginal orifice

B
Hymen

C
Vagina

D
Labia majora

Solution

The labia majora and labia minora are equivalent to the male scrotum and comprise of the vulva. The opening of the vagina is often covered partially by a membrane called hymen.
Question 7
5 / -1

Match List I with List II

Choose the correct answer from the options given below:

A
(A) - (I), (B) - (II), (C) - (III), (D) - (IV)

B
(A) - (II), (B) - (I), (C) - (III), (D) - (IV)

C
(A) - (IV), (B) - (III), (C) - (II), (D) - (I)

D
(A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Solution

Fermentation (A) uses microbes like Saccharomyces cerevisiae to produce wine, beer, and ethanol, matching I.

Lactic Acid Bacteria (B) are used in making curd and other dairy products, matching II.

Antibiotics (C) like Penicillin are produced by Penicillium fungi, matching III.

Methanogens (D) are responsible for producing biogas by digesting plant waste, matching IV.
Question 8
5 / -1

Where does syngamy occur?

A
Terrestrial

B
Water

C
Outside

D
Internally

Solution

Syngamy is the fusion of 2 haploid gametes to form a diploid zygote. This process of fusion happens internally inside the female body. Because of this, syngamy is also often known as internal fertilization.
Question 9
5 / -1

______ provides passage for menstrual flow.

A
Vagina

B
Vulva

C
Clitoris

D
Mons pubis

Solution

The vagina provides a passage for the menstrual flow, receives the male’s penis during copulation and serves as the lower birth canal at the time of delivery.
Question 10
5 / -1

What happens after the weaning of an infant?

A
Galactorrhea

B
Lactorrhea

C
Production of milk continues

D
Involution

Solution

After the weaning of an infant, the process of lactation stops and the process of apoptosis begins. This is the controlled death of the mammary cells which eventually brings back the glands to its puberty stage.