The wings of a bird and the wings of an insect are examples of: MCQ with Answer and Explanation

The wings of a bird and the wings of an insect are examples of:
A. Vestigial organs
B. Atavisms
C. Analogous organs
D. Homologous organs
Answer: Option C
Solution (By JKExamLibrary)
Analogous organs are structures that perform similar functions but have different anatomical structures and evolutionary origins. The wings of a bird (modified forelimbs with bones and feathers) and the wings of an insect (membranous extensions of the exoskeleton) both evolved for flight but are not derived from a common winged ancestor. This is an example of convergent evolution.

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Practice More Biology Questions

Question #1
The organ that produces the hormone thrombopoietin is the:
A. Liver
B. Spleen
C. Kidney
D. Bone marrow

Correct Answer: Option A


Explanation:
Thrombopoietin, which stimulates platelet production, is primarily produced by the liver and to some extent by the kidney. Erythropoietin is mainly from kidneys.

This question belongs to: Science Biology
Question #2
The functional unit of the human kidney where filtration occurs is the:
A. Loop of Henle
B. Renal corpuscle
C. Bowman's capsule
D. Distal tubule

Correct Answer: Option B


Explanation:
The renal corpuscle consists of the glomerulus (capillary tuft) and Bowman's capsule. This is where ultrafiltration of blood occurs. The filtrate then passes through the proximal tubule, loop of Henle, distal tubule, and collecting duct. The loop of Henle concentrates urine, the tubules reabsorb and secrete. The nephron is the complete functional unit.

This question belongs to: Science Biology
Question #3
Which of the following is a characteristic of fungi?
A. Autotrophic nutrition
B. Presence of chloroplasts
C. Heterotrophic nutrition with chitinous cell wall
D. Cell wall of cellulose

Correct Answer: Option C


Explanation:
Fungi are eukaryotic, heterotrophic (saprophytic or parasitic), with cell walls containing chitin and glucans, not cellulose. They lack chloroplasts and are non-photosynthetic. Examples: yeasts, molds, mushrooms. They store food as glycogen. Reproduction can be asexual or sexual. Fungi play a key role as decomposers in ecosystems and are used in antibiotics production.

This question belongs to: Science Biology