Reproduction in Animals Worksheet-2
(a) Determine any disease in the heart
(b) Know about diseases of brain
(c) Determine any hereditary disease in the embryo
(d) All of these.
(a) Unfertilized eggs
(b) Fertilized eggs
(c) Larvae from unfertilized eggs, which are fed on royal jelly
(d) Larvae from unfertilized eggs, which are not cared by the workers at all.
(a) It begins around the age of 11 and lasts upto 18 or 19 years of age
(b) It starts at the end of puberty and ends at the beginning of adulthood
(c) It is synonym with puberty
(d) It is post puberty period when external sex characters appear.
(a) Egg laying females
(b) Birds raised for breeding
(c) Young birds reared for meat
(d) Birds raised for both eggs and meat.
(i) Every sperm has one sex chromosome.
(ii) All parts of the body grow at the same rate during adolescence.
(iii) Hormones act wherever they are released by the glands.
(iv) Pituitary is called the master gland.
(a) (i) & (ii) (b) (iii) & (iv) (c) (i) & (iv) (d) (ii) & (iv)
(a) It gives protection to the penis
(b) It is intermediate structure between sperm duct and penis
(c) It is a narrow duct that helps in passage of urine
(d) It is a narrow duct that helps in passage of urine and sperm both.
(i) First menstrual cycle is called menarche.
(ii) Menopause occurs in the female at the age of 45-50 years.
(iii) Vagina of female reproductive system is primary sex organ.
(iv) Breast is the accessory sex character.
(a) (i), (ii)& (iii) are true; (iv) is false
(b) (i), (ii) & (iv) are true; (iii) is false
(c) (ii), (iii) &(iv) are true; (i) is false
(d) (i) & (ii) are true; (iii) is false.
(a) Multicellular organisms (b) Animals
(c) Vertebrates (d) Mammals
Thyroxine controls ______ in frogs and the development of ______ and ______ during embryonic development of other vertebrates. In an adult endotherm, it controls ______.
(a) Development, circulatory system, muscles, basal metabolic rate
(b) Metamorphosis, circulatory system, muscles, breathing rate
(c) Development, bones, nervous system, breathing rate
(d) Metamorphosis, bones, nervous system, basal metabolic rate.
(a) It is an immunodeficiency disease
(b) HIV virus has RNA as its genetic material
(c) AIDS can be transmitted to an infant from the infected mother through her milk
(d) The time-lag between the infection and appearance of AIDS symptoms may vary from week to month.
Answer Key:
(1)-(c); (2)-(a); (3)-(a); (4)-(c); (5)-(c); (6)-(d); (7)-(b); (8)-(d); (9)-(d); (10)-(d)