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Plant Physiology

Solution for Class 12, Biology, Plant Physiology

Question 1

Question: Which one of the following elements in plants is not remobilised?

Phosphorus
Calcium
Potassium
Sulphur

Topic:

Plant Physiology

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Question 2

Which one of the following elements in plants is not remobilised?

Phosphorus
Calcium
Potassium
Sulphur

Topic:

Plant Physiology

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Question 3

Sir i want to confirm that young leaf mein photosyntheis jyaca hoga na?

Topic:

Plant Physiology

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Question 4

Action spectrum of photosynthesis resembles roughly the

Absorption spectrum of chlorophyll $a$
Absorption spectrum of chlorophyll $b$
Both (a) and (b)
Absorption spectrum of chlorophyll $c$

Topic:

Plant Physiology

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Question 5

Qu for Ro pressure should be (a) Equal to O.p Whore than

OP

less than op

Topic:

Plant Physiology

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Question 6

None funnel (A)

cos - I : φ_{ω} = - 10

ASE-II:

ψ_{ω} = 0

in ines.

Directions:

(- 2000)

High $(- 1000)$ to $(0 ω)$

Topic:

Plant Physiology

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Question 7

Qu for Ro pressure should be (a) Equal to O.p Whore than

OP

less than op

Topic:

Plant Physiology

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Question 8

By looking into the ploidy of given structures, find the ploidy of

O^{π}

and

◯

plant.

3.

$q - 4 n, 0^{7} - 6 n$
$O^{π} - 6 n, ? - 4 n$
$0^{π} - 8 n, ? - 4 n$
$7 - 4 n, 0^{π} - 8 n$

Topic:

Plant Physiology

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Question 9

DNA duplication in E.coli takes 20 minutes. An E.coli cell with heavy DNA is allowed to grow in

N^{14}

containing

NH_{4} Cl

for 100 minutes. Find the ratio of Hybrid DNA molecule to light DNA molecules after 100 minutes.

$1 : 31$
$1 : 15$
$1 : 3$
$1 : 1$

Topic:

Plant Physiology

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Question 10

What is the approximatelfe span of parrot?

60 yrs.
15 yrs.
$440 y /3$

Topic:

Plant Physiology

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Question 11

In angiosperms, ploidy of embryo sac is:

Diploid
Triploid
Haploid
Both (a) or (c)

Topic:

Plant Physiology

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Question 12

In angiosperms, ploidy of embryo sac is:

Diploid
Triploid
Haploid
Both (a) or (c)

Topic:

Plant Physiology

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Question 13

The endosperm in angiospermic plant is :

Haploid
Diploid
Triploid
Polyploid.

Topic:

Plant Physiology

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Question 14

The function of tapetum innermost layer of the anther is :

Dehiscence
Mechanical
Protection
Nutritional.

Topic:

Plant Physiology

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Question 15

In angiosperms, female gametophyte is represented by :- Erybry

0.5 a C

Synergids
Carpel
Egg
Pollen grain.

Topic:

Plant Physiology

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Question 16

The endocarp of coconut is :

Liquid
Soft
Fibrous
Very hard and stony.

Topic:

Plant Physiology

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Question 17

In Vallisneria, pollination takes place by :

Water
Insect
Animal
Air.

Topic:

Plant Physiology

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Question 18

Movement of male gamete towards archegonium in prothallus of fern is :

Thermotactic
Chemotropic

Topic:

Plant Physiology

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Question 19

(4) Ans. (3) Q. Which of the following is a substrate for DNA Replication :

ATP
DNA Polymerase
Helicase
Deoxyribonucleotide

Topic:

Plant Physiology

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Question 20

Triphosphate Ans. (4) Q. Which of the following is a palindromic nucleotide sequence in a DNA :

GAATTC and CTTAAG
CGATAC A and CGTTAG
CATGCA and GCTAGT
None of these

Topic:

Plant Physiology

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Solution for Class 12, Biology, Plant Physiology

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