Control and Coordination (HBBVS)
| Description: Control and Coordination | |
| Number of Questions: 16 | |
| Created by: Varsha Mane | |
| Tags: Control and Coordination Control and Coordination in plants Tropisms Nasties Coordination in animals Human nervous system The endocrine system |
Which of the following is/are the example(s) of thigmonasty?
a. Tendrils of a grapevine growing around a bamboo stick b. Folding of leaves of Mimosa pudica plant on touching c. Opening of the petals of dandelion flower in the morning
______________, a plant hormone, is produced and secreted by the meristematic tissue at the tip of the shoot.
Which of the following statements is/are incorrect about auxins?
a. Auxins are responsible for phototropic and geotropic responses in plants. b. Auxins speed up the growth in stem, but slow down the growth in roots. c. Auxins promote the opening and closing of stomata.
Phototropism is the movement of a plant part in response to light. Which of the following plant hormones causes phototropism?
Suraj observed that the petals of moonflower close during the day when there is bright sunlight, but open up at night when it is dark. This movement is an example of
Which of the following is the function of synapse in the human nervous system?
Which of the following parts of the brain controls the reflex movement of eye muscles, shape of eye lens and size of the pupil?
Which of the following statements is/are false?
a. The spinal cord is a very thick nerve that runs inside the cavity of backbone in a human body. b. Autonomic nervous system consists of the brain and spinal cord. c. Peripheral nervous system controls the voluntary nervous system.
Which of the following parts control(s) the heartbeat, breathing, blood pressure and the peristaltic movements of the alimentary canal?
Match the following:
| a. Photoreceptors | 1. They are present in the skin. |
| b. Gustatory receptors | 2. They are present in the eyes. |
| c. Thermoreceptors | 3. They are present in the tongue. |
The hindbrain consists of which of the following parts of the brain?
a. Pons b. Cerebellum c. Medulla d. Hypothalamus
The ______________ coordinates body activities, so that the mechanisms and chemical reactions of the body work together efficiently.
Which of the following statements is correct about the pineal gland?
Iodine is necessary for the making of _____________ hormone in the human body.
Which of the following statement is/are incorrect?
a. Parathyroid glands are four small glands that are embedded in the thyroid gland. b. The function of the parathoromone hormone is to regulate carbohydrate metabolism and blood pressure. c. Thymus gland is large in young children, but shrinks after puberty.
Match the following:
| a. Sensory neurons | 1. They serve as a link between other neurons. |
| b. Motor neurons | 2. They transmit impulses from the central nervous system, i.e. spinal cord and brain towards effectors. |
| c. Relay neurons | 3. They transmit impulses from receptors towards central nervous system, i.e. spinal cord and brain. |