Mark the wrong items in each of the following
(i) Fission, budding, fragmentation and gametogenesis.
(ii) Spermatocyte, polar body, spermatid and spermatogonium.
(iii) Primordial germ cells, egg mother cells and primary follicle polar body.
(iv) Spermatogonia, spermatids, sperms and spermiation.

Mark the odd item in each series and select the correct option. (i) Spermatocyte, polar body, spermatid, spermato-gonium (ii) Endometrium, corpus luteum, acrosome, Graafian follicle (iii) Vas deferens, Fallopian tube, epididumis, Cowper's gland (iv) Testes, prostate, seminal veriscles, Cowper's gland

What is the number of chromosomes in the following cells of a human male? (i) Spermatogonial cells (ii) Spermatids (iii) Primary spermatocytes (iv) Sertoli cells

Which of the following are the reason (s) for Rheumatoid arthritis ? Choose the correct option. (i) The ability to differentiate pathogens or foreign molecules from self cells increases. (ii) Body attacks self cells. (iii) More antibodies are produced in the body. (iv) The ability to differentiate pathogens or foreign molecules from self cells is lost.

Identify the statements as correct or incorrect with explanations for your answer (i) FSH acts on the Leydig cells and stimulates synthesis and secretion of androgens. (ii) The increased level of GnRH acts on the anterior pituitary and stimulates the secretion of gonadotropins, i.e. LH and FSH. (iii) The fully grown primary oocyte completes mitotic division producing two daughter nuclei, i.e. secondary oocyte and first polar body. (iv) Ovum is a rounded, motile cell having abundant cytoplasm called ooplasm and a large nucleus termed as germinal vesicle.

Consider the following statements each with two blanks. (A) Seminiferous tubules produce overset((i))"_____" while Leydig's cells produce overset((ii))"_____" . (B) In females, urethra is small and conducts overset((iii))"_____" while in males it conducts urine and overset((vi))"_____" . (C) The process of formation of spermatozoa form spermatogonia is called overset((v))"_____" and the process of maturation of spermatids into spermatozoa is called overset((vi))"_____" . Which one of the following options, gives the correct fill ups for the respective blanks numbers from (i) to (vi) in the statements?

Select the correct option to fill up the blanks in the following statements. (i) Controlled breeding experoments are carried out using_____. (ii) In MOET technology, the fertilised eggs at______ cells stages, are recovered and transferred to surrogate mothers. (iii) In MOET technology, the cow produces______eggs instead of one egg. (iv) _______ is an industry devoted to the catching, processing or selling of fish.

Refer to the following figures regarding division bryophyta. (i). 'A' are the androcyte mother cells of the antheridium, which give rise to a large number of biflagellate male gametes. (ii). 'B' is the autheridial chamber and 'C' is multicellular stalk of antheridium. (iii). 'D' and 'E' respectively represents venter canal cells and neck canal cell of the femal sex organ. (iv). 'F' is the egg cell of the archegonium, which usually possesses severatl female gameters. Which of the following combinations of above statements is incorrect?

The given statements describe a group of organisms. (i) Instead of a cell wall they have a protein rich pellicible making their body flexible. (ii) They have 2 flagella, a short and a long one. (iii) They show mixotrophic nutrition (iv) They are connecting link between plants and animals. which of the following groups is referred to here?