Read the passage given below and answer the following questions from (i) to (v).
A system of control and coordination is essential in living organism to maintain homeostasis as well as to respond to various stimuli. The working together of various organs in an organism, to produce a proper response to a stimulus is called coordination. In animals, control and coordination is done by the nervous system and endocrine system. Hormones in animals conduct a variety of functions like growth, sexual development, vegetative development, cellular respiration, metabolism, thermal production etc. While the nervous system coordinates activities of animals like movement, hormones integrate the coordination. Larger complex animals like vertebrates have endocrine glands to produce hormones.
(i) Which of the following statement is incorrect regarding Thyroid gland?
Present in the neck region.
Produces Thyroxine.
Responsible for metabolic rate, healthy hair and skin.
Regulates blood sugar level.
(4)
Read the passage given below and answer the following questions from (i) to (v).
A system of control and coordination is essential in living organism to maintain homeostasis as well as to respond to various stimuli. The working together of various organs in an organism, to produce a proper response to a stimulus is called coordination. In animals, control and coordination is done by the nervous system and endocrine system. Hormones in animals conduct a variety of functions like growth, sexual development, vegetative development, cellular respiration, metabolism, thermal production etc. While the nervous system coordinates activities of animals like movement, hormones integrate the coordination. Larger complex animals like vertebrates have endocrine glands to produce hormones.
(ii) Which endocrine gland controls development of female sex organs, regulates menstrual cycle, etc?
Pituitary
Thyroid
Ovaries
Pancreas
(3)
Read the passage given below and answer the following questions from (i) to (v).
A system of control and coordination is essential in living organism to maintain homeostasis as well as to respond to various stimuli. The working together of various organs in an organism, to produce a proper response to a stimulus is called coordination. In animals, control and coordination is done by the nervous system and endocrine system. Hormones in animals conduct a variety of functions like growth, sexual development, vegetative development, cellular respiration, metabolism, thermal production etc. While the nervous system coordinates activities of animals like movement, hormones integrate the coordination. Larger complex animals like vertebrates have endocrine glands to produce hormones.
(iii) Deficiency of which hormone leads to dwarfism?
Adrenaline
Thyroxine
Growth Hormone
Somatostatin
(3)
Read the passage given below and answer the following questions from (i) to (v).
A system of control and coordination is essential in living organism to maintain homeostasis as well as to respond to various stimuli. The working together of various organs in an organism, to produce a proper response to a stimulus is called coordination. In animals, control and coordination is done by the nervous system and endocrine system. Hormones in animals conduct a variety of functions like growth, sexual development, vegetative development, cellular respiration, metabolism, thermal production etc. While the nervous system coordinates activities of animals like movement, hormones integrate the coordination. Larger complex animals like vertebrates have endocrine glands to produce hormones.
(iv) __________ is a hormone produced by the beta cells of the pancreas.
Insulin
Glucagon
Glycogen
Oxytocin
(1)
Read the passage given below and answer the following questions from (i) to (v).
A system of control and coordination is essential in living organism to maintain homeostasis as well as to respond to various stimuli. The working together of various organs in an organism, to produce a proper response to a stimulus is called coordination. In animals, control and coordination is done by the nervous system and endocrine system. Hormones in animals conduct a variety of functions like growth, sexual development, vegetative development, cellular respiration, metabolism, thermal production etc. While the nervous system coordinates activities of animals like movement, hormones integrate the coordination. Larger complex animals like vertebrates have endocrine glands to produce hormones.
(v) Growth hormone is secreted by:
Pituitary gland
Thyroid gland
Pancreas
Testes
(1)
Read the passage given below and answer the following questions from (i) to (v).
Our nervous system is responsible for coordinating human body behaviour and transmitting signals between different body parts. In vertebrates it consists of two main parts known as the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The CNS consists of the brain and spinal cord. The PNS consists of nerves that are long fibers connecting the CNS to every other part of the body.
(i) Which one of the following statements about the nervous system is not correct?
The process of detecting the signal or the input and responding to it by an output action might be completed quickly.
At the end of the axon, the electrical impulse sets off the release of some chemicals.
Nervous tissue is made up of an organised network of nerve cells or neurons.
An impulse need not to be converted into a chemical signal for onward transmission.
(4)
Read the passage given below and answer the following questions from (i) to (v).
Our nervous system is responsible for coordinating human body behaviour and transmitting signals between different body parts. In vertebrates it consists of two main parts known as the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The CNS consists of the brain and spinal cord. The PNS consists of nerves that are long fibers connecting the CNS to every other part of the body.
(ii) Those actions when we do something without thinking about it, or without feeling in control of our reactions are known as:
motor actions
reflex actions
nervous actions
hallucination
(2)
Read the passage given below and answer the following questions from (i) to (v).
Our nervous system is responsible for coordinating human body behaviour and transmitting signals between different body parts. In vertebrates it consists of two main parts known as the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The CNS consists of the brain and spinal cord. The PNS consists of nerves that are long fibers connecting the CNS to every other part of the body.
(iii) Which one is the correct sequence of event when bright light falls on our eyes?
Sensory neuron Brain Motor neuron Effector muscles in the eye Eye muscle contracts Receptors in eyes
Receptors in eyes Brain Sensory neuron Motor neuron Effector muscles in the eye Eye muscle contracts
Receptors in eyes Effector muscles in the eye Sensory neuron Brain Motor neuron Eye muscle contracts
Receptors in eyes Sensory neuron Brain Motor neuron Effector muscles in the eye Eye muscle contracts
(4)
Read the passage given below and answer the following questions from (i) to (v).
Our nervous system is responsible for coordinating human body behaviour and transmitting signals between different body parts. In vertebrates it consists of two main parts known as the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The CNS consists of the brain and spinal cord. The PNS consists of nerves that are long fibers connecting the CNS to every other part of the body.
(iv) The largest part of the brain comprising two hemispheres is known as:
cerebellum
cerebrum
CNS
cranium
(2)
Read the passage given below and answer the following questions from (i) to (v).
Our nervous system is responsible for coordinating human body behaviour and transmitting signals between different body parts. In vertebrates it consists of two main parts known as the Central Nervous System (CNS) and the Peripheral Nervous System (PNS). The CNS consists of the brain and spinal cord. The PNS consists of nerves that are long fibers connecting the CNS to every other part of the body.
(v) Muscle cells have special ______ that change both their shape and their arrangement in the cell in response to nervous electrical impulses.
proteins
nerves
amino acids
membranes
(1)
