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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

Rapid movement of leaves of mimosa on touching is an example of _____________?
A Turgor movement
B Nastic movement
C Tropic movements.
D Growth movement
Correct Answer: Turgor movement
Which of the following is a uni-nucleated cell?
A A smooth muscle cell.
B A cardiac muscle cell.
C A skeletal muscle cell.
D All of these
Correct Answer: A smooth muscle cell.
The place of attachment of leaf with the shoot is called__________?
A Pith.
B Pit.
C Petiole
D Ecdysone
Correct Answer: Petiole
Bony callus formation completes in___________?
A 2-3 weeks
B 3-4 weeks.
C 2-3 months.
D 3-4 months.
Correct Answer: 2-3 months.
Which of the following cells are involved in soft callus formation?
A Fibroblast and osteoblast.
B Osteoblast and osteoclast.
C Osteoclast and osteocyte
D Onteocyte and osteoblast
Correct Answer: Fibroblast and osteoblast.
Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of ____________?
A Chemotropic movement
B Chemotactic movement
C Chemosastic movement
D Haptonastic movement
Correct Answer: Chemotactic movement
A fracture hematoma has____________?
A Healing properties.
B Destructive properties.
C Neutralizing properties.
D Dead cells
Correct Answer: Dead cells
Vascular Cambium initially appears as actively dividing cells between_________________?
A Primary Xylem and secondary xylem.
B Primary xylem and secondary phloem.
C Primary xylem and primary phloem
D Secondary xylem and secondary phloem.
Correct Answer: Primary xylem and primary phloem
If two ends of fractured bone are opened and kept united via screws and wires drilled in bone substance. This step in fracture repair is called___________?
A Open reduction.
B Closed Fixation.
C Open fixation.
D Immobilization
Correct Answer: Open reduction.
Which of the following statements about fractures in old age is incorrect?
A They are more common than in adult age.
B Occur as a result of bone being thin and weak.
C Due to good blood supply it results in quick healing.
D It involves osteoblasts and osteocytes.
Correct Answer: Due to good blood supply it results in quick healing.

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