Read the following statements. P) Vaccines are used to prevent the diseasesQ) Antibodies for causative microorganisms produced in the body by vaccinationIn the above sentences
Read the following statements :1) Imbalance caused by excessive human activities in forest reserves.2) Unprecedented development in terms of infrastructure and other activities.The pattern of rainfall is affected by :
Read the following statements.Statement A : Biomass can also be used as a biofuel.Statement B : Decomposers also depend on other organisms for their energy requirement.Select the correct option.
Read the following statements :Statement A : Accessory glands of human male reproductive system have one prostate gland and two Cowper’s glands.Statement B : Accessory glands of human male reproductive system have two prostate glands and one Cowper’s gland.Select the correct option.
Which of the following statements regarding human reproductive system are correct ?i) The male gametes are known as sperms.ii) A mature sperm is diploid cell.iii) The female gametes are ova.iv) Haploid cells are formed by the process of mitosis.v) A zygote is formed when an ovum and a sperm fuse.
Read the following statements and choose the right ones.i) Sympathetic nervous system stimulates dilation of pupil, permitting more light to enter into eyes.The similar effect to sympathetic control is produced when eye drops like atropine are used.
Which of the following statements are not true about the brain?i. Brain is covered with 3 layers. They are duramater, arachnoid membrane and piamater.ii. Centres of hearings, smell, memory, sight etc. are located in Cerebellum.iii. Involuntary actions like salivation, vomiting, blood pressure are controlled by the medulla.iv. Cerebrum controls posture and balance of the body.
Which of the following statements are true?i. Sudden action in response to something in the environment is called reflex action.ii. Sensory neurons carry signals from sensory organ to spinal cord.iii. Motor neurons carry signals from spinal cord to muscle.iv. The path through which signals are transmitted from a receptor to a muscle or a gland is called reflex arc.
