Tissues — Science STD 9 — Question

One small crystal of potassium permanganate can colour large volume of water. This proves that ____________:

A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is:

To solve the food problem of country, which among the following necessary?

1. Increased production and storage food grains.
2. Easy access of people to the food grain.
3. People should have money to purchase the grains.
4. All the above.

Four elements W, X, Y and Z contain 8, 11, 9 and 17 protons per atom respectively. The element which cannot form an anion is most likely to be:

Whose living cells provide tensile and mechanical strength?

1. Collenchymas.
2. Sclerenchyma.
3. Phloem.
4. Sclereids.

Which of the following can be called a suspension?

Plants can be made disease-resistant by:

1. Heat treatment.
2. Hormone treatment.
3. Volchicine treatment.
4. Breeding with their wild relatives.

Which of the following is not a part of epidermal tissue system?

Crossing between genetically dissimilar plants to obtain crops having useful characteristics:

Berseem and Sudan grass are grown to be used as: