Science 1 Marks Question

X – Glucose
Y – Oxygen
Z – Water

Rustom Hormusji Dastur (1896-1961)

Neera

Sodium hydroxide solution

This is so because they contain more coloured pigments than chlorophyll.

Oxygen

Chlorophyll

Photosynthesis

The water and minerals absorbed by the roots are transported to the leaves by the vessels present in xylem. They form a continuous passage or pipe line throughout the root, the stems, the branches and the leaves.

Our body can have the raw materials required for the synthesis of food, but our body does not have chlorophyll which can capture the energy of sunlight.

Plants prepare their own food by the process of photosynthesis using water, carbon dioxide and sunlight.

The plant will not perform photosynthesis and starch will not be produced.

Alcohol is flammable and can catch fire if placed near a heat source.

Chlorophyll captures sunlight to provide energy for photosynthesis.

Stomata help in the exchange of gases and transpiration in plants.

Photosynthesis is the process by which green plants make their own food using carbon dioxide, water, and sunlight.

Yes, plants respire like human beings by breaking down glucose to release energy.

Yes, all parts of the plant carry out respiration to release energy.

Glucose is stored in plants in the form of starch.

Carbon dioxide, water, and sunlight are required for glucose production.

(a) Sunlight/light energy,
(b) Carbon dioxide

Iodine solution

Oxygen

Carbon dioxide

Glucose and oxygen

Chlorophyll captures the energy of sunlight.

Chlorophyll

Photosynthesis

Leaves are the food factories of plants.

The food is made mainly in leaves and some other parts of the plants that contain chlorophyll.

Tiny pores present on the lower surface of the leaves that helps in exchange of gases are called stomata.

The components of food that are necessary for our body are called nutrients.

Carbon dioxide is essential for the process of food preparation in plants.

The red ink experiment with twigs demonstrates how water is transported in plants.

During respiration, plants (and animals) take in oxygen. 

Carbon Dioxide

Xylem carries water.

Stomata are like tiny doorways on the surface of leaves, and they have a very important job

The process by which plants prepare their food is called Photosynthesis.