1) In hibiscus a single leaf is produced at one node. This type of arrangement is ………..
Ans: alternate arrangement
2) When amaranthus leaves are rubbed on a piece of bloating paper a change in colour occurs. What is the reason?
Ans: contains green pigments
3) Pepper vine is the example for …………..
Ans: climbers
4) When the seed germinates the ……….. comes out first.
Ans: radicle
5) The plant which get its planting material from its roots.
Ans: bread fruit tree
6) ………………. is the plant have been brought from foreign countries and grown here.
Ans: tea
7) The black spot seen on contaminated bread are ………….?
Ans: fungi
8) An example for climbers
Ans: Betel vine
9) Plants that absorb water and minerals from the host plant and prepare their own food with the help of their leaves are known as
Ans: semi parasites
10) …………… are special kinds of plants growing in marshy areas.
Ans: Mangroves
11) …………. is an example for a method of mechanical pest control.
Ans: Flytrap using tulsi
12) Which is ecofriendly method for controlling pests?
Ans: Use biological pest control
13) Snake knows smell by using
Ans: tongue
14) An example for contagious disease?
Ans: Typhoid
15) Which is the disease that may spread by consuming polluted food?
Ans: Cholera
16) Filariasis is spread by ………….
Ans: Culex mosquitoes
17) Incubation period of pigeon is
Ans: 14 days
18) ……………… is the liquid that contain cell membrane
Ans: Cytoplasm
19) Who wrote the book of Indian birds.
Ans: Salim Ali
20) …………….. is helpful in differentiating plant cell from animal cell?
Ans: cell wall
