The hormone that induces ovulation in females is: MCQ with Answer and Explanation

The hormone that induces ovulation in females is:
A. Progesterone
B. FSH
C. LH
D. Estrogen
Answer: Option C
Solution (By JKExamLibrary)
A mid-cycle surge in luteinizing hormone (LH) triggers the final maturation and release of the secondary oocyte from the Graafian follicle (ovulation). FSH stimulates follicle growth, estrogen proliferates uterine lining, progesterone maintains it.

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Practice More Biology Questions

Question #1
The animal that has a four-chambered stomach for rumination is:
A. Pig
B. Dog
C. Cow
D. Cat

Correct Answer: Option C


Explanation:
Ruminants like cows, sheep, and goats have a four-chambered stomach (rumen, reticulum, omasum, abomasum) to digest cellulose via microbial fermentation. Cats and dogs have simple stomachs, pigs are monogastric.

This question belongs to: Science Biology
Question #2
In leaves, the small openings surrounded by guard cells that allow gas exchange are known as:
A. Stomata
B. Sclereids
C. Lenticels
D. Hydathodes

Correct Answer: Option A


Explanation:
Stomata are microscopic pores typically on the lower epidermis of leaves, bounded by two guard cells that regulate opening and closing for gas exchange (CO₂ in, O₂ out) and transpiration. Lenticels are on bark, hydathodes release water droplets (guttation), sclereids are thick-walled sclerenchyma cells. Stomatal density varies with environmental conditions.

This question belongs to: Science Biology
Question #3
Phagocytosis is a type of which cellular process?
A. Osmosis
B. Endocytosis
C. Plasmolysis
D. Exocytosis

Correct Answer: Option B


Explanation:
Phagocytosis, or 'cell eating', is a type of endocytosis where the cell membrane engulfs large solid particles, such as bacteria or cellular debris, forming a vesicle called a phagosome. This phagosome then fuses with a lysosome for digestion. It is primarily performed by specialized cells like macrophages and neutrophils.

This question belongs to: Science Biology