Natural Resources — Science STD 9 — Question

Endoplasmic reticulum is absent in:

Which of the following is parasitic protozoan?

1. Amoeba.
2. Entamoeba.
3. Euglena.
4. Paramecium.

Food is converted to energy in:

Smooth muscles occur in:

Lactation period is maximum in:

1. Frieswal
2. Sahiwal
3. Holstein-Friesian.
4. Karan-Swiss.

Find out the correct sentence about manure.

1. Manure contains large quantities of organic matter and small quantities of nutrients.
2. It increases the water holding capacity of sandy soil.
3. It helps in draining out of excess of water from clayey soil.
4. Its excessive use pollutes environment because it is made of animal excretory waste.

1. (i) and (iii)
2. (i) and (iii)
3. (ii) and (iii)
4. (iii) and (iv)

Lignified elongated dead cells are:

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

The desirable agronomic characters improved using crop variety programmes are called:

The longest cell in the human body is:

Harelip is a:

1. Acquired disease.
2. Infectious disease.
3. Metabolic disease.
4. Congenital disease.