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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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