All cell of a plant are descendents of the zygote.

All cells of a plant are descendents of the

(a) If a normal human cell has 46 chromosomes, how many chromosomes will be there in a human (i) sperm cell, and (ii) zygote ? (b) What sizes of plants are produced if both parents have genes Tt ?

Given type of plant cells are found in all of the following , except

Given type of plant cells are found in all of the following , except

Name the cells formed by the division of zygote.

Which of the following sequences are correct a) In Bryophytes – Gametophytes - Sex organ – Gamete fusion – Zygote - Spore mother cell – spore – Thallus. b ) In Angiosperm – pollination – fertilization – zygote – new plant. c) In Gymnosperm – male cone, and female cone – microspore and megaspore – Zygote – new sporophytes plant. d) In pteridophytes – pollination by wind, fertilization in the presence of water – zygote prothallus, new plant.

Which of the following constitutes the descending part of the plant axis ?