Tissues — Science STD 9 — Question

The efferent part of neqron is:

Photochemical smog is formed by:

1. NO₂
2. SO₂
3. CO₂
4. CO

In a natural ecosystem, decomposers include:

1. Bacteria and fungi.
2. Parasitic algae.
3. Macroscopic animals.
4. All the above.

Which is the most important source of food and fodder?

Cell arises from pre-existing cell was stated by:

Which of the following is a membrane enclosed organelle found in eukaryotic cells containing most of the cells genetic material?

Which of the following is incorrect for green manure?

1. It supplies organic matter.
2. It supplies nitrogen.
3. It prevents soil erosion.
4. It allows leaching.

Which of the following is not an example of simple tissue in plants?

Nucleus is located at the periphery in:

Spiders and scorpions are:

1. Insect.
2. Millipedes.
3. Arachnids.
4. Crustacean.