Life Processes - MCQs for Class 10

The processes that maintain life are known as:

• Photosynthesis

• Digestion

• Life processes

• Respiration

Which of these is not a life process?

• Breathing

• Excretion

• Thinking

• Nutrition

Which process provides energy to carry out other life processes?

• Photosynthesis

• Respiration

• Digestion

• Circulation

The source of energy for life processes is:

• Proteins

• Vitamins

• Carbohydrates

• Water

Which term includes nutrition, respiration, and excretion?

• Growth

• Movement

• Life processes

• Transportation

The form of nutrition in green plants is:

• Heterotrophic

• Saprotrophic

• Autotrophic

• Parasitic

Photosynthesis is carried out in:

• Roots

• Flowers

• Leaves

• Fruits

The ultimate source of energy for autotrophs is:

• Water

• Carbon dioxide

• Sunlight

• Minerals

The green pigment in leaves essential for photosynthesis is:

• Hemoglobin

• Chlorophyll

• Cytoplasm

• Xanthophyll

Photosynthesis occurs in the presence of:

• Chlorophyll, sunlight, CO₂, water

• Oxygen only

• Light and minerals

• Sunlight and nitrogen