KPPSC Biology MCQs

PPSC Lecturer Biology Test 67 Online Preparation MCQs

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There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
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Test Instructions:-
Test Name	Lecturer Biology
Subject	Biology Test 67
Test Type	MCQs
Total Questions	25
Total Time	20 Minutes
Total Marks	100

You have 20 minutes to pass to the quiz.

PPPSC LECTURER BIOLOGY ONLINE PRACTICE TEST NO. 67

1 / 25

Which option is true for sieve cell and sieve tube?

All the given

Conduction efficiency of sieve tube is more than sieve cell

Companion cell is present in sieve tube, but not in sieve cell

Sieve plate is present in sieve tube, but not in sieve cell

2 / 25

Which tissue does not have deposition of lignin?

Phloem fibers

Sclerenchyma

Vessels

Collenchyma

3 / 25

Which pair is false for conductive tissue?

Gymnosperm - Sieve cells

Pteridophyta - Companion cell

Gymnosperm - Albuminous cell

Angiosperm - Vessels

4 / 25

Deposition of lignin is necessary in xylem. Because

Due to deposition of lignin, bidirectional conduction of mineral and water becomes possible

Due to lignin deposition, it will provide flexibility and elasticity to plants

Due to lignin deposition, it will be transformed into living mechanical tissue

Xylem wall should be strong against the osmotic pressure which is exerted by soil solution conducted by xylem

5 / 25

Which is not observed in hygroscopic (epiphytic) root of orchid?

Absorbs moisture from air

It has lenticels

Cuticle is absent on it

Epidermis is multi layered

6 / 25

What is special characteristic of Bicollateral V.B. ?

Bicollateral V.B. are same in stem and root as well

Bicollateral V.B. conducts water and mineral bidirectionally

Phloem is only on one side of xylem

Phloem is on both side of xylem

7 / 25

Sieve tube of phloem can be considered as living component. Because

It has only nucleus

It has only cytoplasm

It possesses companion cells which has nucleus

It has both cytoplasm and nucleus

8 / 25

Which option is not suitable for function phloem component?

None of the given

Companion cells - Regulation of sieve tube by plasmodesmata

Sieve tube - conduction of the organic food

Phloem parenchyma - Secretion of Latex and Resin

9 / 25

Which is multilayered region of ground tissue, tissue system and these layers are made up of only Parenchyma ?

Pericycle

Cortex

Hypodermis

Endodermis

10 / 25

How many components are without deposition?

Collenchyma, Sclerenchyma, Xylem parenchyma, Phloem parenchyma, Companion cell, Phloem fibers, Xylem fibers

11 / 25

What is wrong for trichomes (stem hairs)?

It is multicellular

Controls transpiration

None of the given

It is on aerial organs

12 / 25

What is applicable to a vascular bundle of root?

Both (A) and (B)

No cambium between xylem and phloem

Xylem and phloem are on different radii

None of the given

13 / 25

How Tracheids and vessels differs from each other?

Tracheids shows deposition of lignin, while vessels shows deposition of Pectin

Each component of tracheids is closed at end, while it is open in vessels

Tracheids shows deposition of pectin, while vessels shows deposition of lignin

Each component of tracheids is open at end, while it is closed in vessels

14 / 25

Which vascular bundle has opposite arrangement to conjoint vascular bundle ?

Radial

Unicollateral

All the given

Open

15 / 25

Which option is true for ground tissue system which has chloroplasts?

It is concerned with photosynthesis

Cortical cells has numerous chloroplasts

It is unilayered

Endodermis is known as Bundle sheath

16 / 25

Instead of companion cell, which cells are present in gymnosperm plants?

Albuminous cells

Sclereids

Fat cells

Sieve cells

17 / 25

What is true for root-hairs ?

It is always multi cellular

Helpful in absorbing water

It is always on aerial organs

Always covered with cuticle

18 / 25

What is not included in stomatal apparatus?

Epidermal cell

Subsidiary cell

Guard cell

Stomatal aperture

19 / 25

Which type of vascular bundle is absent in stem?

Closed

Bicollateral

Unicollateral

Radial

20 / 25

Which is odd of the following?

Albuminous cell

None of the given

Companion cell

Sieve tube

21 / 25

How many components are living and non-living among given list ?

6, 3

5, 4

4, 5

3, 6

22 / 25

Which character is not for epidermis of stem?

Protective in nature

It is unicellular

No cuticle layer

Reduced transpiration

23 / 25

What is the type of vascular bundle which have a phloem and two cambium ?

None of the given

Bicollateral

Radial

Concentric

24 / 25

Which sequence is true for ground tissue system from outer to inner side ?

pith - conjuctive tissue - pericycle - endodermis - cortex

cortex - endodermis - pericycle - conjuctive tissue - pith

cortex - endodermis - pith - pericycle

endodermis - pericycle - pith - conjuctive tissue

25 / 25

Which is included in Vascular bundle?

only xylem

only cambium

only phloem

xylem and phloem

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