Tissues — Science STD 9 — Question

Soil erosion is caused due to:

1. Strong wind.
2. Heavy rains.
3. Keeping the fields fallow for a long.
4. All of these.

Fungi resemble animals in having:

1. Mycelium.
2. Chitin.
3. Glycogen.
4. both (b) and (c).

Select the most appropriate option.Eukaryotic cells have a dense double membrane-bound structure inside, called:

Name the gas which plays a major role in global warming:

1. Carbon monoxide.
2. Nitrous oxide.
3. Carbon dioxide.
4. Sulphur dioxide.

Father of histology is:

Following are a few definitions of osmosis:
Read carefully and select the correct definition:

Which of the following is not a desirable feature of a genetically modified plant?

Xylem is made of:

Lignified elongated dead cells are:

1. Parenchyma.
2. Collenchymas.
3. Sclerenchyma.
4. None of the above.

Centrosome occurs in:

1. Plant cell.
2. Animal cell.
3. Animal cells and some lower plant cells.
4. All the above.