Unit - 2.2 Sexual Reproduction in Plants. — BIOLOGY STD 6 — Question

A-horizon is considered to be the most fertile layer of soil.

State the location of the following in a flower:
Stigma

Given alongside is a diagram of human heart showing its internal structures. Label the parts marked 1 to 6, and
answer the following questions.

a.Which types of blood is carried by the blood vessel marked 2?
b.Name the main artery which takes the blood from heart to different parts of the body?
c.Which chamber of the heart receives deoxygenated blood from the body?
d.Which chamber of the heart receives oxygenated blood from the lungs?

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.

What features are possessed by both plant and animal cells.

Write five products each that we receive from plants and animals.

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

Answer the following in detail
Why are seeds produced in large quantities?

Name the disease in which the number of platelets reduces to 25,000 – 30,000 percubic mm of blood. State its major symptoms