Health and Hygiene — BIOLOGY STD 6 — Question

Why is the respiratory system necessary?

What is vegetative propagation? How does it take place in Bryophyllum.

Give the symptoms of marasmus.

Define :Seed Germination

What are the various components of the biosphere ?

Try to find the names of four cell organells hidden in this maze, (hint: The hidden words can appear horizontally or vertically; forwards or backward or even mixed up). Write them in the lines provided. For example : “NUCLEUS” in the last row, seven backward letters.

A

J

F

B

H

E

M

O

E

L

O

U

C

A

V

H

V

L

E

U

C

O

P

L

A

S

T

N

O

E

C

H

R

O

M

O

P

L

A

S

T

X

T

E

R

S

U

E

L

C

U

N

W

P

L

A

S

T

I

D

Classify the given plants into categories
Eucalyptus, mint, rose, spinach, neem, radish, tulsi, banana and china rose into herbs, shrubs and trees.

Why was the invention of the microscope so important to the study of living beings?

Give the difference in the function between the following parts:
Petal and sepal

You are travelling in a car with all the windows closed in winter. After a while you notice a mist forming on the windows. This mist is made up of tiny droplets of water. Where did they come from ?