Science Practice Quiz 136

Q1.How do plants obtain water and minerals for their food-making process?

A. They absorb them directly from the air through leaves. B. They synthesise them within their stems. C. They absorb them from the soil through roots and transport them to leaves. D. They obtain them from other organisms.

Q2.What is the primary role of nutrients for living organisms?

A. To attract pollinators and disperse seeds. B. To enable them to build bodies, grow, repair damaged parts, and provide energy for life processes. C. To regulate the climate and maintain soil fertility. D. To convert sunlight directly into chemical energy.

Q3.What are the tiny pores present on the surface of leaves, which are surrounded by 'guard cells', called?

A. Xylem B. Phloem C. Stomata D. Chloroplasts

Q4.Which structures are responsible for transporting water and minerals to the leaves, running like pipes throughout the plant?

A. Stomata B. Guard cells C. Vessels D. Chlorophyll

Q5.What is the primary function of chlorophyll in leaves?

A. To transport water and minerals B. To provide structural support to the leaf C. To capture the energy of the sunlight D. To store synthesized food

Q6.The process by which plants synthesize food from carbon dioxide and water in the presence of sunlight is known as what?

A. Respiration B. Transpiration C. Photosynthesis D. Fermentation

Q7.Which of the following is NOT listed as a necessary component for the process of photosynthesis in the provided text?

A. Sunlight B. Carbon dioxide C. Oxygen D. Water

Q8.What is considered the ultimate source of energy for all living organisms?

A. Water B. Carbon dioxide C. Chlorophyll D. Sun

Q9.What are the tiny units that make up the bodies of living organisms?

A. Tissues B. Organs C. Cells D. Systems

Q10.In most cells, what is the distinct, centrally located spherical structure called?

A. Cell membrane B. Cytoplasm C. Nucleus D. Vacuole

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Science Practice Quiz 136