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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

In which group of tracheophytes ovules are born on the exposed surface of megasporophylls______________?

A Spheospsida
B Filicineae
C Gymnosperms
D Angiosperms
Correct Answer: Gymnosperms

Protonema is___________?

A Thallus like
B Algae like
C Fungus like
D Plant like
Correct Answer: Algae like

Specialized protective coverings around megasporangium which vary in number are called_________________?

A Sporangium
B Integuments
C Ovule
D Pericarp
Correct Answer: Integuments

Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________?

A Its short thick branched horizontally growing rhizome
B Fibrous adventituous roots arise from the lower side of rhizome
C Shows heteromorphic alternation of generation
D Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures
Correct Answer: Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures

Antheridiophore and archegoniophore are found in_____________?

A Marchantia
B Funaria
C Both of these
D None of these
Correct Answer: Both of these

Which of the following statement about filicinae a group of tracheophytes is incorrect_________________?

A They belong to sphenopsida
B They are seedless and their leaves are called fronds
C They live in shady and moist areas.
D They show circinate vernation.
Correct Answer: They belong to sphenopsida

The simplest of all bryophytes are___________?

A Thallophytes
B Embryophytes
C Mosses
D Liverworts
Correct Answer: Liverworts

The arrangement of unequal dichotomous branches in one plane during evolution of leaves is called_____________?

A Overtopping
B Fusion
C Webbing
D Planation
Correct Answer: Planation

Mosses are included in sub-division of ___________?

A Anthoceropsida
B Hepaticopsida
C Bryopsida
D Lycopsida
Correct Answer: Bryopsida

The increase in pH of blood has ________ effect on the oxygen carrying capacity of haemogolobin?

A plus ve
B – ve
C No
D All of these
Correct Answer: plus ve
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