A 'stamen' is: A) The female gametophyte of a plant B The male gametophyte of a plant C) The cells that undergo mitosis in the root D) a cell that forms the xylem In plants, which cell is produced that grows into the gametophyte? What is the site ...
Biologically, males are defined as the sex that produces the smaller gametes (e.g. sperm), implying that the male and female sexes only exist in species with gamete dimorphism (anisogamy). Our ancestors were isogamous, meaning that only one gamete size was produced. The question of the ...
Which of the following systems controls gamete (sex cell) production? A. Nervous B. Endocrine Which hormone controls the production and secretion of adrenal cortex hormones? The male sex hormone is produced where? a. In the interstitial cells of the testes b. In the tubules of the testes ...
To answer the question "Male gametes in angiosperms are formed by the division of," we can follow these steps:1. Understanding the Structure: In angiosperms, the male gametes are produced within the pollen grains. The process b
There is growing interest in the possibility that genetic compatibility may drive mate choice, including gamete choice, particularly from the perspective of understanding why females frequently mate with more than one male. Mate choice f... T Tregenza,N Wedell - 《Molecular Ecology》 被引量: 1745...
Non-motile male gametes are produced in View Solution How many and what type' of male gametes are produced by the male gametophyte of Capsella View Solution View Solution View Solution View Solution Exams IIT JEE NEET UP Board Bihar Board ...
Studies of zooids produced by complanate Scytosiphon thalli throughout the growing season over a period of several years show that the simultaneous production of male and female gametes is rare. Gametogenesis occurs in late winter and spring (August–October). Gametes are negatively phototactic, an...
gametophyte- the gamete-bearing individual or phase in the life cycle of a plant having alternation of generations plant life,flora,plant- (botany) a living organism lacking the power of locomotion megagametophyte- the female gametophyte produced by the megaspore of a plant that produces both micr...
The evolution of sex ratio has produced, in most plants and animals with separate sexes, approximately equal numbers of males and females. Why should this be so Two main kinds of answers have been offered. One is couched in terms of advantage to population. It is argued that the sex ratio...
Undifferentiated sperm cells in the male embryo are called ___. Oogenesis in the female results in one functional gamete - the ovum, or egg - whereas spermatogenesis in males results in four functional gametes. What are the other cells produced during oogenesis called? And what is the benefit...