Where are root hairs present in root?

1

(a)

The root bears unicellular root hairs in the zone of maturation.

In Alstonia, the phyllotaxy is called whorled. Why?

1

(a)

The number of leaves arise from a single node in Alstonia, so it is called whorled.

Why some tap roots become swollen and fleshy?

1

(a)

These roots store food in them

Write one function of root

1

(a)

Root provides fixation to the plants in soil.

What are the two layers of seed coat?

1

(a)

Testa is the outer hard layer of the seed coat, while tegmen is an nner thin layer of seed coat.

Add the missing floral organs of the given formula of Fabaceae,______.

1

(a)

Br \(\oplus \)\({ K }_{ (5) }{ C }_{ (1+2) }{ A }_{ (1+(9)) }{ G }_{ (1) }\)

Write one diagnostic feature of Fabaceae.

1

(a)

The presence of nodulated roots.

Write the common source of oil yielding plants from the family-Fabaceae.

1

(a)

Groundnut and soyabean

Name one ornamental plant each of family.Solanaceae and Fabaceae

1

(a)

Cestrum nocturnum of family Solanaceae and Lupinus of family FABACEAE.

Describe the fruit of Allium cepa(onion).

1

(a)

A loculicidal capsule with endospermic seeds.

Differentiate between reticulate venation and paralleel venation.

2

(a)

List out the three characteristics of modified stem bulb with examples.

2

(a)

You have heard about several insectivorous plant that feed on insects. Nepenthes or the pitcher plant is one such example which usually grows in shallow water or in marsh lands. What part of the plant is modified into a 'pitcher'. How does this modification help the plant for food even though it can photosynthesisie like any other green plant?

2

(a)

Differentiate between pedical and peduncle.

2

(a)

Mango and coconut are drupe type of fruits. In mango, fleshy mesocarp is edible. What is the edible part of coconut? What does milk of tender coconut represent?

2

(a)

Differentiate between fibrous root and adventitious roots

3

(a)

Define the term inflorescence. Explain the basis for the different types inflorescence in flowering plants.

3

(a)

Differentiate between (a) Racemose and cymose inflorescence (b) Apocarpous and syncarpous ovary

3

(a)

Differentiate between bract and bractole.

3

(a)

Draw the following structures of Pisum sativum 
(i) Diadelphous androecium
(ii) Carpel
(iii) TS of ovary

3

(a)

What is meant by modification of root? What type of modification of root is found in the:
(a) Banyan tree
(b) Turnip
(c) Mangrove trees

5

(a)

Stolon,offset and rhizome are different forms of stem modification. How can these modifiedforms of stem be distinguished from each other?

5

(a)

Explain with suitable examples the different types of phyllotaxy.

5

(a)