Question

.30 Which of the following is not an outbreeding device?
A) Self sterility
B) Homogamy
C) Unisexuality
D) Heterostyly​

Answer 1

Answer:

option b

Explanation:

I thought that this will help you

Answer 2

Answer:

Unisexuality is not an outbreeding device.

Explanation:

(a) Self-sterility is a mechanism that prevents self-pollination. It is also called self-incompatibility. In this genetic mechanism, the growth of the pollen tube in the pistil or the germination of pollen grains is inhibited and this prevents the fertilization of the ovules from the pollen of the same flower.

(b) Homogamy is used in biology in four separate senses: Inbreeding can be referred to as homogamy. Homogamy refers to the maturation of male and female reproductive organs at the same time, which is also known as simultaneous or synchronous hermaphrodism and is the antonym of dichogamy.

(c)  Unisexuality the condition of an organism or species capable of producing only male or female gametes (sex cells) but never both. A unisexual organism of a bisexual species is one in which the male and female gonads are found in separate individuals. In plants this condition is often called dioecism.

(d) Heterostyly is a genetic polymorphism in which flowers differ between individual plants of a species in heights at which the stamens and style are positioned. Distylous species have short- and long-style flowers, and long and short anthers, respectively.

Hence option (c) is correct.

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