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Photosynthesis and Plant Nutrition

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Questions and Answers

What is the primary function of roots in terrestrial plants?

To absorb water and nutrients from the soil (correct)
To break down organic compounds into inorganic ones
To synthesize proteins and other compounds
To absorb sunlight for photosynthesis

What is the essential element used in the synthesis of proteins and other compounds?

Nitrogen (correct)
Phosphorus
Iron
Magnesium

How do bacteria contribute to the nutrition of autotrophs?

By breaking down organic compounds
By providing essential nutrients
By preparing organic compounds from atmospheric nitrogen (correct)
By synthesizing proteins

What determines the form of nutrition in an organism?

Type of food material and its availability (C) Signup and view all the answers

What is the role of autotrophs in their ecosystem?

To prepare organic compounds from inorganic ones (B) Signup and view all the answers

What is the mode of nutrition in heterotrophs?

Consuming other organisms or organic compounds (C) Signup and view all the answers

In humans, the transport of oxygen and carbon dioxide is a function of which system?

Circulatory system (A) Signup and view all the answers

What is the primary function of xylem in plants?

Transport of water (B) Signup and view all the answers

In humans, which organs are responsible for removing excretory products in the form of soluble nitrogen compounds?

Kidneys (A) Signup and view all the answers

How do plants typically get rid of waste material?

By storing it in cell-vacuoles or excreting it into the soil (D) Signup and view all the answers

What is the primary function of the circulatory system in humans?

Transportation of materials (B) Signup and view all the answers

In plants, which tissues are responsible for transporting water, minerals, food, and other materials?

Vascular tissue (B) Signup and view all the answers

What is the function of the temporary finger-like extensions of the cell surface in Amoeba?

To fuse over the food particle and form a food-vacuole (A) Signup and view all the answers

In which organism does food get taken in at a specific spot?

Paramoecium (D) Signup and view all the answers

What is the role of cilia in Paramoecium?

To move the food to a specific spot (B) Signup and view all the answers

What is the shape of the alimentary canal in human beings?

A long tube extending from the mouth to the anus (A) Signup and view all the answers

What is the mode of nutrition in organisms like cuscuta, ticks, lice, leeches and tape-worms?

Parasitic (A) Signup and view all the answers

What is the purpose of the food-vacuole in cellular nutrition?

To break down complex substances into simpler ones (B) Signup and view all the answers

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