The biodiversity hotspot concept was introduced by: MCQ with Answer and Explanation

The biodiversity hotspot concept was introduced by:
A. Charles Darwin
B. Alexander von Humboldt
C. Norman Myers
D. E.O. Wilson
Answer: Option C
Solution (By JKSSB Mock Tests)
Norman Myers introduced the concept of biodiversity hotspots in 1988—regions with high endemic species and significant habitat loss (≥70% original vegetation lost). Examples: Western Ghats, Indo-Burma. Conservation efforts prioritize these areas. Darwin contributed evolution, Humboldt to biogeography, E.O. Wilson is known for sociobiology and biodiversity studies. Hotspots cover only 2.4% of Earth's land but hold >50% of plant species.

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Practice More Biology Questions

Question #1
The term 'metastasis' refers to:
A. Programmed cell death
B. Benign tumor growth
C. Spread of cancer cells to distant sites
D. Inflammation

Correct Answer: Option C


Explanation:
Metastasis is the process by which malignant cancer cells detach from the primary tumor, travel through the blood or lymph, and establish secondary tumors in other organs. Benign tumors do not metastasize. Apoptosis is programmed cell death.

This question belongs to: Science Biology
Question #2
Consider statements about human blood: 1. Red blood cells lack a nucleus at maturity. 2. Platelets are essential for blood clotting. 3. Plasma constitutes about 45% of blood volume. Which are correct?
A. 1, 2 and 3
B. 1 and 3 only
C. 1 and 2 only
D. 2 and 3 only

Correct Answer: Option C


Explanation:
Mature mammalian red blood cells (erythrocytes) are enucleated to maximize space for hemoglobin. Platelets (thrombocytes) are cell fragments crucial for the blood coagulation cascade. Blood plasma, the liquid component, constitutes about 55% of total blood volume, while the formed elements (RBCs, WBCs, platelets) make up the remaining 45%. Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #3
The vitamin that is essential for the synthesis of collagen is:
A. Vitamin A
B. Vitamin D
C. Vitamin C
D. Vitamin B₁₂

Correct Answer: Option C


Explanation:
Vitamin C is a cofactor for prolyl and lysyl hydroxylases in collagen synthesis. Deficiency leads to impaired wound healing and scurvy.

This question belongs to: Science Biology