Science PT1 revision worksheet 2023-24 OOEHS girls

While doing an activity in class, the teacher asked Priya to handover a translucent material. Which among the following materials will Priya pick and give her teacher?

• a. Glass tumbler

• b. Mirror

• c. Butter paper

• d. Aluminium foil

Which of the following is not the primary function of the stem?(think and answer)

• conduction of water

• formation of branches

• bears flowers and fruits

• photosynthesis

What do plants do with the food that is prepared during photosynthesis?

• a.Plants prepare food only for animals to eat.

• b. Plants store all the food that is prepared as fruits or nuts.

• . c. Plants prepare food to release oxygen into the air for humans to breathe.

• d. Plants use the food to grow and store the excess food in various plant parts

Different underground parts of plants are modified for food storage. Which of the following is an example of root modification for food storage?

• potato

• sweet potato

• ginger

• all of these

• none of these

Answer explanation

Storage roots, such as carrots, beets, and sweet potatoes, are examples of roots that are specially modified for storage of starch and water. They usually grow underground as protection from plant-eating animals.

The property of a material to shine is called ____________.

• texture

• solubility

• lustre

• hardness

• luster

Answer explanation

Lustre (British English) (or luster) (American English; see spelling differences) But in school we use british english so lustre is correct.

a. Type of root and definition

• tap root: The tap root is the main, central large root that gives rise to lateral roots.

• tap root:a root (as in most grasses) that is one of many similar slender roots branching directly from the base of the stem of a plant

• fibrous root: The tap root is the main, central large root that gives rise to lateral roots.

• fibrous root:a root (as in most grasses) that is one of many similar slender roots branching directly from the base of the stem of a plant

what is the meaning of lustre?

• The property of the material is Lustre. Lustre is the shine of a material.

• I don't know?? Is this button correct or something??

• For the convenience of identifying and locating the different materials.

• To study their properties and identify common patterns among them.

Answer explanation

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III. Correct the following statements: The materials that can be compressed are called soluble materials.

III. Correct the following statements:The loss of water from the leaves of the plant in the form of water vapour is called photosynthesis.

III. Correct the following statements:The flat and broad part of a leaf is called the midrib.