Why are male gametes produced in large number?
The reason is that male gametes needs to move to reach the female gamete and in that process many gametes might be lost and so they have to be produced in large number.
Why the number of male gametes produced is very much higher than that of female gametes?
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<br> Reason: To compensate this loss of male gametes during transport, the number of female gametes produced is several thousand tiems the number of male gametes produced.
Why the number and size of human male gametes differ from the number and size of human female gametes?
Answer: It is an advantage to produce lots of gametes rather than a few. But production is costly, and could result in cutting down the size of individual gametes: males produce a lot of sperm, but each one is very small. In other words, the number of gametes produced is inversely proportional to gamete size.
Why do females produce fewer gametes than males?
Although asymmetry in gamete size rather than number is usually used as the defining characteristic, size dimorphism has the almost inevitable consequence that females pro- duce fewer gametes than males due to a simple physical trade-off – larger things can be produced in smaller numbers, given a limited amount of …
Why male gametes are produced in large numbers in organisms exhibit external fertilisation?
External fertilization is the process where a female organism’s egg is fertilized outside the body. … The chances of at least one sperm fertilizing the egg increases when a large number of gametes are produced. Hence, this is the reason why the gametes produced in large numbers exhibit external fertilization.
What do plants produce that contains the male gametes?
Sites of gamete production in flowering plants
|Anthers||Produce male gametes (in pollen grains)|
|Stigma||The top of the female part of the flower which collects pollen grains|
|Ovary||The bottom of the female part of the flower – produces the female gametes (ovules)|
Why do plants like bryophytes and Pteridophytes produce a large number of male gametes?
Male gametes need a medium to move towards female gametes for fertilisation. In simple plants such as bryophytes and pteridophytes, the transfer of gamete takes place through water medium. To compensate the loss of male gametes during transport, a large number of male gametes are produced.
Why are two types of male gametes formed in equal proportions?
The males contain two heteromorphic sex chromosomes, i.e., XY. All the ova formed by female are similar in their chromosome type (22 + X). Therefore, females are homogametic. … As the two types of sperms are produced in equal proportions, there are equal chances of getting a male or female child in a particular mating.
In which type of fertilization is the number of male and female gametes produced in large numbers?
Internal fertilization is the union of an egg cell with a sperm during sexual reproduction inside the body of a parent. And since the male gamete has to reach the female gamete they are motile and they are large in number so to increase the chances of fertilization. The female gamete is non motile and few in number.
Why the gametes produced are haploid even though the gamete mother cells are diploid?
Gametes contain half the chromosomes contained in normal diploid cells of the body, which are also known as somatic cells. Haploid gametes are produced during meiosis, which is a type of cell division that reduces the number of chromosomes in a parent diploid cell by half.
What is difference between male gamete and female gamete?
Gametes are an organism’s reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. … These cells develop into sperm or ova.
Why do men have long gamete production?
In a natural setting, male age and mating history are usually confounded: older males have usually mated and replenished their sperm supplies more often, so they have made a greater lifetime reproductive effort.
Do females have larger gametes?
The smaller gamete is male, a sperm cell, whereas the larger gamete is female, typically an egg cell. Anisogamy is common and widespread in multicellular organisms. In both plants and animals gamete size difference is the fundamental difference between females and males. It most likely evolved from isogamy.
What is the difference between females and males in terms of gametes produced How does this affect their behavior?
Sex roles are defined by differences in gametes: females produce relatively few, highly nutritious (usually non-motile) gametes, whereas males produce comparatively abundant, smaller, motile gametes. … The higher the reproductive variance, the stronger the effects of sexual selection (Figure 1).