Question

Explain three types of asexual and two types of two types of sexual reproduction in lower
plants by giving examples.​

Answer 1

Answer:

Asexual reproduction:-

1. Fission or Binary Fission:

Fission, also called binary fission, occurs in prokaryotic microorganisms and in some invertebrate, multi-celled organisms. After a period of growth, an organism splits into two separate organisms.

2.Budding:-

Budding is a form of asexual reproduction that results from the outgrowth of a part of a cell or body region leading to a separation from the original organism into two individuals.

3.Fragmentation:-

Fragmentation is the breaking of the body into two parts with subsequent regeneration. If the animal is capable of fragmentation, and the part is big enough, a separate individual will regrow.

Sexual reproduction:-

1.Hermaphroditism:

Hermaphroditism occurs in animals where one individual has both male and female reproductive parts. Invertebrates, such as earthworms, slugs, tapeworms and snails, are often hermaphroditic.

2.Pollination:

Generally pollen grains have a tough protective coat which prevents them from drying up. Since pollen grains are light, they can be carried by wind or water. Insects visit flowers and carry away pollen on their bodies.

Answer 2

Answer:

the three types of asexual reproduction in plants are -

1. fragmentaion

2. vegetative propgation

3. Spore formation

the two types of sexual reproduction in plants are

1. self pollination

2. cross pollination

Explanation:

fragmentaion - basically , fragmentation occurs in spirogyra(leaf like thing) . In this process , due to abundant food and nutrients available to spirogyra, it grows long and then breaks up into separate parts. then those separate parts start to live as an independent spirogyra fibre.

vegetative propgation - in Vegetative propgation the plants reproduce asexually with the help of roots, stem, leaf, buds, flowers, spores, tubers,etc present on the plant.

for e.g - potatoes reproduce through the tubers present on them .

raddish/ carrots reproduces through its roots

spore formation - spore formation is nothing but the formation of spore on the plant through which they reproduce asexually.

Sexual reproduction -

self pollination - during self pollination the plant for e.g (hibiscus) it is a bisexual plant hence it contains androcieum (male part in the flower also the main/important whorls) and gynoceium (female part in the plant and also the main/important whorls) . the stigma present on thw plant releases a seed like thing and this unites with the ovary present in the gynoceium - to refer pls check 10th std textbook (chp - life processes part 2 )

method 2 - Cross pollination

this process basically takes place when birds or bees try to collect nectar but also transfer the seed like thing present in the stigma. they insects tranfer these seed like thing in another plant but of the same species. hence that seed goes into the gynoceium and unites with the ovary .

hey friend! hope it helps you...