The Flower ICSE Class-6th Concise Selina Biology Solutions
The Flower ICSE Class-6th Concise Selina Biology Solutions Chapter-2.We Provide Step by Step Answer of Objective, True False , Fill in the blanks , Match the following , Short/Long Answer Type of Exercise-2 The Flower . Visit official Website CISCE for detail information about ICSE Board Class-6 .
The Flower ICSE Class-6th Concise Selina Biology Solutions Chapter-2
Multiple Choice Question
1. Put a tick mark (✓) against the correct alternative in the following statements:
(a) In a germinating seed, the roots develop from:
(b) In a germinating seed, the shoot develops from:
(c) Which one of the following is a monocotyledonous seed ?
(d) If the cotyledons are pushed above the soil, then such type of germination is called :
(e) If the cotyledons remain under the soil, then such seeds type of germination is called:
(f) Pollen is produced in the:
(g) Reproductive whorls of a flower are:
(i) Stamens and carpels
(ii) Sepals and petals
(iii) Sepals and stamens
(iv) Petals and carpels
Stamens and carpels
PQ. Vegetative propagation is not observed in:
(h) Which one of the following is a false fruit ?
(i) In a seed, food is generally stored in:
(iv) Catyledons or endosperms
Catyledons or endosperms
1. Given below is a longitudinal section of a bean seed. Label the parts marked 1 to 5 and write their functions.
1. Testa (seed coat)
- Testa (seed coat) — It protects the seed from insects and bacteria as well as from mechanical injury.
- Plumule — Plumule develops into a shoot.
- Radicle — Radicle develops into a root
- Micropyle — The micropyle absorbs as much water as is required for germination.
- Cotyledon — Contain stored food material which is used by the seeding during germination.
2. Name the following The Flower ICSE Class-6th
(a) A seed which shows hypogeal germination.
Ans. pea seed, maize. seed
Ans. Maize seed, wheat seed
(c) A dicot seed.
Ans. Bean seed, gram seed, pea seed
(d) A seed which shows epigeal germination.
Ans. Bean seed castor seed, tamarind seed
Differentiate between the following pairs of terms:
Radicle and plumule.
Radicle: In a seed the radicle lies downwards near the lower pointed end of the grain. It gives rise to the root.
Plumule: In a seed the plumule lies upwani near the cotyledon and gives rise to the shoot.
Ilium and micropyle.
IlIum : On one side of seed câat, there is scar called hi hum, which marks the place where the seed was attached to the fiiüt wall.
Micropyle : Above the hilum is a small pore called micrope. The micropyle absorbs as much water as is required for germination
Testa and tegmen.
Testa: The seed is protected by a thick outermost coat called the testa or seed coat.
Tegmen: Under the testa lies a very thin membrane called the tegmen.
Give two functions of a fruit.
Functions of a fruit are:
- Fruit is a protective case for the seeds.
- Fruit is a temptation to animals and man to eat it and scatter the seeds
Question 5. Match the columns :
Column A, ColumnB
Radicle emerges out of the seed earlier than plumule.What one advantage is served by this ?
Radicle comes out of the seed earlier than the plumule has advantages as it gets water and minerals from the soil and gives it to the growing plumule.
State whether the following statements are True or False.
(a) Some seeds have no cotyledons.
(b) Warmth is necessary for the germination of seeds.
(c) All seeds have two cotyledons.
(d) Oxygen is necessary for the germination of seeds.
State one function of the following:
- Radicle — form the roots
- Cotyledons — On removing th& testa and the tegmen from a soaked bean seed, you will find that the seed is made up of two fleshy seed leaves called the cotyledolm. They contain stored food material which is used by the seedlling for growth.
- Endosperm—ovary forms the fruit.
- Micropyle —Above the hilum is a small pore called micropyle (micro = small, pyle = passage). The micropyle absorbs and allows as much water as is required for germination.
The three conditions necessary for germination of seeds are (tick the correct answer):
(a) Oxygen, suitable temperature and water.
(b) Good soil, water and air
(c) Good soil, suitable temperature and light.
(d) Light, oxygen, and temperature.
(e) Oxygen, carbon dioxide, and light.
Name the part of the seeds from which the following are given out:
(a) Roots : .
(b) Leaves :
(a) Roots — Radicle give rise to roots.
(b) Leaves—Plumule gives rise to shoot bearing leaves
In the spaces provided below, draw labelled diagrams to show the three stages in the germination of any seed you have observed.
Long Answer Questions (The Flower ICSE Class-6th)
(Write the answers in your note-book)
What is meant by pollination ? Name the two types of pollination.
The transfer of the pollen grains from the anthers to the stigma of a flower is called pollination.
The two types of pollination found in flowering plants are.
- self-pollination – that occurs within the same plant.
- cross-pollination – that occurs between two flowers of two different plants but of the same kind.
Imagine that all the seeds produced by a plant happen to fall under the same plant and sprout into new plants. Mention any two problems that will be faced by the new plants.
If all the seeds produced by a plant happen to fall under the same plant and sprout into new plants then in this situation plants will face the following problems:
- A large number of plants will grow in a small limited space. The water and the minerals available to them in the soil will be limited.
- The air surrounding them will not be enough and less sunshine will be available to them. As a result, most of these sprouted plants will die.
What is a flower ? Draw a typical flower and label its different parts.