Biology
Give appropriate biological or technical terms for the following:
(i) Process of maintaining water and salt balance in the blood.
(ii) Hormones which regulate the secretion of other endocrine glands.
(iii) Movement of molecules of a substance from their higher concentration to lower concentration when they are in direct contact.
(iv) The condition in which a pair of chromosomes carry similar alleles of a particular character.
(v) The complex consisting of a DNA strand and a core of histones.
(vi) The onset of menstruation in a young girl.
(vii) Squeezing out of white blood cells from the capillaries into the surrounding tissues.
(viii) The fluid which surrounds the foetus.
(ix) The relaxation phase of the heart.
(x) The difference between the birth rate and the death rate.
Excretory System
ICSE 2018
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Answer
(i) Osmoregulation
(ii) Tropic hormones
(iii) Diffusion
(iv) Homozygous chromosomes
(v) Nucleosome
(vi) Menarche
(vii) Diapedesis
(viii) Amniotic fluid
(ix) Diastole
(x) Growth rate of population
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