The pigment that is responsible for the green color of leaves is: MCQ with Answer and Explanation

The pigment that is responsible for the green color of leaves is:
A. Xanthophyll
B. Chlorophyll
C. Carotene
D. Anthocyanin
Answer: Option B
Solution (By JKSSB Mock Tests)
Chlorophyll a and b absorb red and blue light and reflect green, giving leaves their color. Carotenoids are yellow/orange, anthocyanins red/purple.

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Practice More Biology Questions

Question #1
In snapdragon (Antirrhinum), a cross between red and white flowers produces pink flowers. This is an example of:
A. Codominance
B. Incomplete dominance
C. Epistasis
D. Complete dominance

Correct Answer: Option B


Explanation:
Incomplete dominance occurs when the phenotype of the heterozygote is an intermediate blend of the two homozygous phenotypes. In snapdragons, a cross between a homozygous red (RR) and homozygous white (rr) flower produces heterozygous pink (Rr) flowers. Neither allele is completely dominant over the other, resulting in a blended phenotype.

This question belongs to: Science Biology
Question #2
The disease caused by the fungus Candida albicans is:
A. Aspergillosis
B. Athlete's foot
C. Candidiasis
D. Ringworm

Correct Answer: Option C


Explanation:
Candidiasis (thrush) is an opportunistic fungal infection caused by Candida albicans, affecting moist areas like mouth, vagina, and skin folds. Ringworm is caused by dermatophytes, athlete's foot by Trichophyton, aspergillosis by Aspergillus.

This question belongs to: Science Biology
Question #3
The process of formation of blood cells is called:
A. Hematopoiesis
B. Hematuria
C. Hemolysis
D. Hemostasis

Correct Answer: Option A


Explanation:
Hematopoiesis is the production of formed elements of blood (red cells, white cells, platelets) from hematopoietic stem cells in the bone marrow. Hemolysis is RBC destruction, hemostasis is stopping bleeding, hematuria is blood in urine. Erythropoietin stimulates RBC production.

This question belongs to: Science Biology