Choose the correct answer from each of the four options given below:

A plant cell may burst when:

1. Turgor pressure equalises wall pressure.
2. Turgor pressure exceeds wall pressure.
3. Wall pressure exceeds turgor pressure.
4. None of the above

Choose the correct answer from each of the four options given below:

The individual flattened stacks of membranous structures inside the chloroplasts are known as:

1. Grana
2. Stroma
3. Thylakoids
4. Cristae

Choose the correct answer from each of the four options given below:

Gigantism and Acromegaly are due to:

1. Hyposecretion of Thyroxine.
2. Hyposecretion of Growth hormone
3. Hypersecretion of Thyroxine
4. Hypersecretion of Growth hormone

Choose the correct answer from each of the four options given below:

The mineral ion needed for the formation of blood clot is:

1. Potassium
2. Sodium
3. Calcium
4. Iron