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Biology 1525 MCQs [All-Courses]

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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

All Topics  1525

Polychaeta have____________?

A Tentacles
B Palps
C Eyes
D All of these
Correct Answer: All of these

Nervous system of nematods consists of?

A Ventral nerve cord
B Dorsal nerve cord
C Lateral nerve cord
D All of these
Correct Answer: All of these

All of the following are true for Platyhelminthes except____________?

A Flatwarms
B Triploblastic
C Coelomate
D Bilateral symmetry
Correct Answer: Coelomate

Exoskeoeton of coelenterates terates is made up to__________?

A Calcium
B Silica
C Chitin
D Both A & B
Correct Answer: Calcium

Pseudocoelem develops from____________?

A Blastopore
B Plastoquinone
C Blastocoel
D Splitting of mesoderm
Correct Answer: Blastocoel

Excretory system of platyhlminthes consists of___________?

A Nephridia
B Flame cells
C Malpighian tubules
D Nephrons
Correct Answer: Flame cells

All of the following coelenterates show alternation of generation except:

A Hydra
B Obelia
C Aurelia
D None of these
Correct Answer: Hydra

Reflex actions below the neck are under control of____________?

A Brain
B Spinal cord
C Hypothalamus
D none of these.
Correct Answer: Spinal cord

Central nervous system of man consists of______________?

A Brain
B Spinal cord
C Both of these
D none of these
Correct Answer: Both of these

Which of the following ions are involved in the initiation of nerve impulse_______________?

A Na+
B K+
C Fe
D none of these
Correct Answer: Na+
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