Explore topic-wise MCQs in SRMJEEE .

This section includes 49 Mcqs, each offering curated multiple-choice questions to sharpen your SRMJEEE knowledge and support exam preparation. Choose a topic below to get started.

1.

The most widely used chemical for protoplast fusion, as fusogens, is

A. Manitol
B. Sorbitol
C. Mannol
D. Poly ethylene glycol (PEG)
Answer» E.
2.

DMSO (Dimethyl sulfoxide) is used as

A. Gelling agent
B. alkaylating agent
C. Chelating agent
D. Cryoprotectant
Answer» E.
3.

Hormone pair required for a callus to differentiate are

A. auxin and cytokinin
B. auxin and ethylene
C. auxin and absiccic acid
D. cytokinins and gibberllin
Answer» B. auxin and ethylene
4.

Synthetic seed is produced by encapsulating somatic embryo with

A. sodium chloride
B. sodium alginate
C. sodium acetate
D. sodium nitrate
Answer» C. sodium acetate
5.

 The production of secondary metabolites require the use of

A. protoplast
B. cell suspension
C. meristem
D. auxillary buds
Answer» C. meristem
6.

Who is the father of tissue culture?

A. Bonner
B. Haberlandt
C. Laibach
D. Gautheret
Answer» C. Laibach
7.

In plant cell, digestion of fats occurs with the help of

A. lysosomes
B. Peroxisomes
C. glyoxisomes
D. microtubules
Answer» D. microtubules
8.

The final acceptor of electrons in the electron transport chain is

A. Water
B. Oxygen
C. Hydrogen
D. Cytochrome b
Answer» C. Hydrogen
9.

The net gain of ATP produced during the oxidation of one glucose molecule in a plant cell

A. 38 ATP molecules
B. 30 ATP molecules
C. 36 ATP molecules
D. 24 ATP molecules
Answer» D. 24 ATP molecules
10.

During respiration yeast converts glucose to

A. ethanol and water
B. ethanol and oxygen
C. ethanol and CO2
D. lactic acid and CO2
Answer» C. ethanol and CO2
11.

Conversion of pyruvic acid into ethyl alcohol is facilitated by the enzymes:

A. carboxylase
B. phosphatase
C. dehygrogenase
D. carboxylase and dehygrogenase
Answer» E.
12.

R.Q. of fatty substances is generally:

A. unity
B. Zero
C. more than one
D. less than one
Answer» E.
13.

In succulent xerophytes the R.Q is :

A. Zero
B. unity
C. less than one
D. more than one
Answer» B. unity
14.

Common immediate source of energy in cellular activity:

A. NAD
B. ATP
C. DNA
D. RNA
Answer» C. DNA
15.

Kreb’s cycle take place in

A. vesicles of ER
B. Mitochondrial matrix
C. lysosomes
D. Dictyosomes
Answer» C. lysosomes
16.

The annual plant exchange of gases takes place mainly through

A. Leaf scars
B. lenticels
C. stomata
D. stem
Answer» D. stem
17.

Respiration is

A. Anabolic process
B. Exothermic process
C. Endothermic process
D. Endergonic process
Answer» C. Endothermic process
18.

The site of glycolysis in a cell is

A. chloroplast
B. nucleus
C. cytoplasm
D. mitochondria
Answer» D. mitochondria
19.

Respiratory enzymes are located in

A. mitochondrial matrix
B. cristae
C. perimitochondrial space
D. outer membrane
Answer» C. perimitochondrial space
20.

The process of respiration in green plants occurs

A. only when stomata are open
B. only when photosynthesis ceases
C. only when photosynthesis is in progress
D. At all times
Answer» E.
21.

Which element is required for Nodulation in Legumes?

A. Mn
B. Fe
C. Mo
D. B
Answer» D. B
22.

The most widely accepted theory accepted to explain the translocation of carbohydrates in higher plants

A. Root pressure theory
B. Osmotic theory
C. Imbibition theory
D. Mass flow theory
Answer» E.
23.

 First experiments related to the method of hydroponics were done by

A. Knop
B. Sachs
C. Arnon
D. Hill
Answer» C. Arnon
24.

Which of the following is essential for Nitrogen Fixation by leguminous plants?

A. Chlorophyll
B. Leghaemoglobin
C. Anthocyanin
D. Phycocyanin
Answer» C. Anthocyanin
25.

Ion can be accumulated against concentration gradient due to?

A. Mass flow
B. Active uptake
C. Passive uptake
D. Donnan equilibrium
Answer» C. Passive uptake
26.

Which of the following bacterium brings about denitrification?

A. Pseudomonas
B. Rhizobium
C. Azotobacter
D. Nitrobacter
Answer» B. Rhizobium
27.

Bacteroid means

A. dead bacteria
B. living bacteria
C. A bacteria like substance
D. living bacteria but cannot divide
Answer» E.
28.

Plant absorb the element nitrogen in the form

A. nitrogen gas
B. nitrites
C. nitrates
D. nitric acid
Answer» D. nitric acid
29.

Plant require Fe and Mg for

A. Synthesis of chlorophyll
B. Opening and closing of stomata
C. Translocation of carbohydrates
D. None of these
Answer» B. Opening and closing of stomata
30.

Molybdenum is involved in plant metabolism in

A. Translocation of solutes
B. Tryptophan synthesis
C. ABA synthesis
D. Nitrate reduction
Answer» E.
31.

Hydroponics is

A. Growing of aquatic plants
B. Growing off floating aquatic plants
C. Soilless cultivation of plants
D. Growing of plants inside water
Answer» D. Growing of plants inside water
32.

Little leaf disease is due to the deficiency of

A. Nitrogen
B. Zinc
C. Manganese
D. Molybdenum
Answer» C. Manganese
33.

The disease “die back of shoots” is caused due to the deficiency of the following microelements

A. Copper
B. Chlorine
C. Manganese
D. Molybdenum
Answer» B. Chlorine
34.

The essential element for the synthesis of auxin is

A. Zinc
B. Sulphur
C. Potassium
D. Phosphorus
Answer» B. Sulphur
35.

Which of the following is necessary for biological nitrogen fixation?

A. Copper
B. Zinc
C. Manganese
D. Molybdenum
Answer» E.
36.

Stomata open at night and close during day time in

A. Xerophytes
B. Mesophytes
C. Succulents
D. Hydrophytes
Answer» D. Hydrophytes
37.

Transpiration is least in

A. High atmospheric humidity
B. good soil moisture
C. high wind velocity
D. dry environment
Answer» B. good soil moisture
38.

Which one of the following is used for measuring the rate of transpiration?

A. Porometer
B. Osmometer
C. Moll’s experiment
D. Potometer
Answer» E.
39.

What is the action spectrum of transpiration?

A. Orange and red
B. Green and ultraviolet
C. Blue and red
D. None of these
Answer» D. None of these
40.

Which of the following is an anti-transpirant

A. PMA
B. PAN
C. IAA
D. AUG
Answer» B. PAN
41.

Water absorption takes place through

A. Lateral roots
B. Root cap
C. Root hairs
D. Tap root
Answer» D. Tap root
42.

The hormone which signals the closure of stomata is

A. Auxins
B. Cytokinine
C. Gibberelline
D. Abscisic acid
Answer» E.
43.

Active uptake of minerals by roots mainly depends on the

A. Availability of oxygen
B. Temperature
C. Light
D. Availability of CO2
Answer» B. Temperature
44.

Cooling of plants is caused by

A. Guttaion
B. Photorespiration
C. Transpiration
D. Assimilation
Answer» D. Assimilation
45.

 The marine animals that kept in fresh water burst. It shows the process of

A. Exosmosis
B. Endoosmosis
C. Plasmolysis
D. Deplasmolysis
Answer» C. Plasmolysis
46.

Plasmolysis occurs due to

A. Absorption
B. Osmosis
C. Endoosmosis
D. Exosmosis
Answer» E.
47.

 Loss of water from the stomata of leaves are known as

A. Guttation
B. Exudation
C. Transpiration
D. Evaporation
Answer» D. Evaporation
48.

The water potential of pure water at atmospheric pressure is

A. -2.3 bar
B. +2.3 bar
C. Zero bar
D. One bar
Answer» D. One bar
49.

The water readily available to plants for absorption by roots is

A. Gravitational water
B. Capillary water
C. Rain water
D. Hygroscopic water
Answer» C. Rain water