Anatomy of Flowering Plants — BIOLOGY STD 11 Science — Question

Distinguish Cytokinesis from Karyokinesis.

Mention the criteria used for classifying Kingdom Fungi into classes.

Flower is a reproductive unit of a plant.

1. It is morphologically called shoot. Explain.
2. On which part, floral whorls are arranged?

Mention any four physiological functions of glucocorticoids or cortisol in a human body.

Rani was amazed to read about the layers and coverings in the plant. As her teacher taught her that like mammals, plants are also formed by various layers of tissues. Thus, forming the different plant system. As the epidermal tissue system forms the outermost covering of the body. She felt curious and asked her elder sister about the same, that how come this is possible. Her sister cleared all her doubts patiently.

1. From where it is derived?
2. Why are outer wall of some plants is cutinised?
3. In some cases, the cuticle is reinforced by a layer of wax. Explain the reason.
4. Extract the message from Rani's behavior.

Ascaris lumbricoides infection occurs through:

1. Sole of uncovered feet.
2. Contaminated cooked measly pork.
3. Improperly cooked measly pork.
4. From air through inhalation.

What is the difference between voluntary and involuntary muscles?

What changes would the meristematic cell undergo to become a xylem tracheid or vessel?

Draw a labelled diagram of the thyroid gland's dorsal view and mention how many groups the hormones have been divided into based on their chemical nature? Write their names.

Answer briefly:
How does the eye regulate the amount of light that falls on the retina.