Tissues — Science STD 9 — Question

Lignified elongated dead cells are:

Parenchyma which contains chlorophyll is called:

1. Collenchymas
2. Selerenchyma
3. Chlorenchyma
4. None of these

How is a bacterial cell different from an onion peel cell:

Phloem is made of:

Intercellular connections in plant cells are called:

Husk of coconut is made of:

1. Sclerenchymatous tissue.
2. Parenchyma.
3. Collenchymas.
4. Chlorenchyma.

The mature cells in the mammalian body, i.e., RBC loses their capacity for:

The ultimate source of energy in an ecosystem is:

1. Sunlight.
2. Glucose.
3. Protein.
4. Green plants.

Which of following organisms can be seen only under the microscope?

Which of the following is a secondary pollutant:

1. PAN.
2. Particulate matter.
3. Hydrocarbons.
4. Chloroflurocarbons.