Science Practice Quiz 190

Q1.How do cells of an organism primarily obtain energy to carry out vital activities of life?

A. By directly absorbing sunlight B. By the breakdown of glucose C. By consuming carbon dioxide D. By storing excess water

Q2.Besides water, what other substance do leaves use along with water to prepare food during photosynthesis?

A. Oxygen B. Nitrogen C. Carbon dioxide D. Mineral nutrients

Q3.In biology, what is defined as a group of cells that perform a specialised function in an organism?

A. An organ system B. A tissue C. A cell colony D. A vascular bundle

Q4.Which specific vascular tissue in plants is responsible for the transport of water and nutrients from the soil?

A. Phloem B. Cambium C. Xylem D. Cortex

Q5.How does the xylem transport water to the entire plant?

A. By forming a discontinuous network of channels connecting only leaves to branches. B. By forming a continuous network of channels that connects roots to leaves through the stem and branches. C. By directly absorbing water through the leaves and distributing it downwards. D. By storing water in the stem and releasing it as needed.

Q6.Which vascular tissue is responsible for transporting the food synthesized by leaves to all other parts of the plant?

A. Xylem B. Cambium C. Phloem D. Epidermis

Q7.What is the primary collective function of xylem and phloem in plants?

A. To provide structural support to the plant. B. To facilitate photosynthesis in leaves. C. To transport substances throughout the plant. D. To regulate the plant's growth hormones.

Q8.According to the provided text, what substances, besides water, move up the stem along with water through the narrow tubes (xylem)?

A. Sugars synthesized in the roots B. Oxygen absorbed from the soil C. Minerals dissolved in water D. Carbon dioxide for photosynthesis

Q9.The pipe-like vessels in plants that transport water and nutrients from the soil are made of special cells, forming what kind of tissue?

A. Meristematic tissue B. Ground tissue C. Vascular tissue D. Dermal tissue

Q10.What conclusion can be drawn from the activity where a stem is placed in coloured water?

A. Leaves absorb coloured water directly. B. The stem conducts water upwards. C. Roots are solely responsible for water absorption. D. Coloured water helps in photosynthesis.

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Science Practice Quiz 190