Science MCQs

Practice multiple choice questions with instant feedback. Select an option to see if you're correct.

Total Questions
2100
Page 29 of 210
Question 281 Hard

The cells that are rich in chloroplasts and specialized for food preparation are called?

A
Guard cells
B
Epidermal cells
C
PhilosophyII cells
D
Root hairs
Question 282 Hard

What happens to the guard cells when they lose water?

A
They swell
B
They become turgid
C
They shrink and close the stoma
D
They start photosynthesizing
Question 283 Hard

Besides leaves, in which other part can photosynthesis occur in some plants?

A
Roots
B
Green stems
C
Flowers
D
Xylem
Question 284 Hard

The Casparian strip is present in the cells of the?

A
Epidermis
B
Cortex
C
Endodermis
D
Pericycle
Question 285 Hard

Which process is responsible for the opening of stomata?

A
Loss of water from guard cells
B
Inflow of water into guard cells
C
Decrease in sugar concentration
D
Respiration in guard cells
Question 286 Hard

The energy released during respiration is stored in which molecule?

A
DNA
B
Chlorophyll
C
ATP
D
Glucose
Question 287 Hard

Which of the following is a direct use of the energy produced by respiration?

A
Absorbing sunlight
B
Synthesis of proteins
C
Absorbing water
D
Transpiration
Question 288 Hard

The principle process that cools the plant's surface is?

A
Photosynthesis
B
Respiration
C
Transpiration
D
Translocation
Question 289 Hard

The vascular cambium is a type of _______ tissue.

A
Dermal
B
Meristematic
C
Permanent
D
Ground
Question 290 Hard

The term for the evaporation of water from the surfaces of leaves and stems is?

A
Guttation
B
Transpiration
C
Respiration
D
Condensation
Showing 281-290 of 2100 questions

Quick Stats

Total Questions 10900
easy 5797
medium 2983
hard 2120

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