Question # 1

Phloem tissues are made up of:

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Tracheids & Vessel cells

Tracheid & companion cells

Sieve tube cells & companion cells

Sieve tube cells & trancheids

The division of nucleus is:

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Mitosis

Karyokinesis

Cytokinesis

Meiosis

................. was a German Botanist.

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Mathias Schleiden

Theodor Sachwann

Robert Brown

Robert Hooke

Prosthetic by all enzymes :

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Required by all enzymes

Loosely attached with enzymes

Proteins In nature

Tightly bound to enzyme

Membrane stack is chloroplast is called:

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Sturma

Granum

Both

None

The normal pH of human blood is:

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6.4

7.4

8.4

9.4

It is a group of related classes:

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Phylum

Class

Species

Family

which of these does not represent unicellular organization.

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Amoeba

volvex

Bacteria

Paramecium

Which of the followings is area of supply of blood in plants?

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Leaf

Stem

Fruit

All

When we add more substrate to an already occurring enzymatic reaction and there is no increase in the rate of reaction, what would you predict?

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All active site have been occupied by substrate molecules

The enzyme molecule have denatured

More substrate acted as inhibitor

More substrate has disturbed the pH of the medium

Type of spindle fibre which attaches the chromosomes is called:

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Kinetochore

Non Kinetochore

Bot a and b

Centromere

Carbon Dioxide is almost .......... percent in air.

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0,01

0.3

0,03

0.1

Felis leo is _____________

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Cat

Lion

Tiger

Deer

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Biology 9th Class English Medium Online Test MCQs With Answers

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