Ch-12 Questions 41 to 60

Chapter-12

Reproduction in Plants

Sr NO.	Question	Answer
40.	The spores are _____ reproductive bodies.	Asexual.
41.	How spores withstand high temperature and humidity?	Each spore is covered by a hard protective coat to withstand unfavourable conditions such as high temperature and low humidity.
42.	Give name of two plants which reproduce by means of Spores?	Moss and Ferns.
43.	Fungi on a bread piece grow from ____ which are present in the air.	Spores.
44.	The ________ are the reproductive plant parts of a plant?	Flowers.
45.	The ______ are the male reproductive part of a flower.	Stamens.
46.	The ____ is the female reproductive part of a flower.	Pistil.
47.	What are unisexual flowers?	The flowers which contain either only the pistil or only the stamens are called unisexual flowers.
48.	What are bisexual flowers?	The flowers which contain both stamens and pistil are called bisexual flowers.
49.	Give three examples for unisexual flowers.	Corn, Papaya and Cucumber.
50.	Give three examples for bisexual flowers.	Mustard, Rose and Petunia.
51.	Whether male and female unisexual flowers may be present in the same plant?	Yes.
52.	Anther contains __________ which produce male gametes.	Pollen grains.
53.	Anther contains Pollen grains which produce ______.	Male gametes.
54.	Main parts of a pistel are:	Stigma, style and ovary.
55.	The ovary contains one or more____.	Ovules.
56.	The ______ or the egg is formed in an ovule.	Female gamete.
57.	How Zygote is formed?	A male and a female gamete fuse to form a zygote.
58.	How the male gamete in the pollen grain reaches the female gamete present in the ovule?	Since pollen grains are light, they can be carried by wind or water.
59.	What adaptation enable the pollen from drying up?	Pollen grains have a tough protective coat which prevents themfrom drying up.
60.	Why flowers are generally so colourful and fragrant. Is it to attract insects?	It is to attract not only insect but other living organisms.