Explanation

Gamma rays consist of radiations similar to x-rays.

They are high-energy electromagnetic waves with no mass or charge.

Explanation

In a food chain, herbivores are primary consumers, feeding on producers (plants), which places them at the second trophic level.

The first level is occupied by plants (producers), and herbivores come next.

Explanation

• A translucent object allows some light to travel through it, but scatters or absorbs some of the light, making it semi-transparent.
• Examples: Frosted glass, wax paper, and tissue paper.

Transparent: Allows all light to pass through, providing a clear view. 

Opaque: Does not allow any light to pass through.

Explanation

Protista includes both unicellular organisms like amoeba and multicellular organisms like algae.

Fungi also includes unicellular organisms like yeast and multicellular organisms like mushrooms and molds.

Explanation

Rice is rich in carbohydrates but low in protein and other essential nutrients.

A diet of rice alone can lead to protein deficiency, causing conditions like kwashiorkor.

Explanation

Photosynthesis requires carbon dioxide, water, and sunlight, not oxygen.

Respiration, rusting, and combustion all need oxygen to occur.

Explanation

Water (H₂O) is a pure compound, not a mixture.

Tea, air, and alloys are mixtures of different substances.

Explanation

The insoluble parts of cytoplasm are mainly the organelles, which include structures like the nucleus, mitochondria, ER, etc.

Mitochondria is a type of organelle, so the broader correct term is organelles.

Explanation

Micro molecules (or small molecules) have low molecular weight, like glucose or amino acids.

Macromolecules are large molecules like proteins, carbohydrates, and nucleic acids.

Explanation

Fossil fuels (like coal, oil, and natural gas) are non-renewable because they take millions of years to form.

Once used, they cannot be replenished on a human timescale.