Class-VI

Plant world

Part I - Assignment - 3

1. Enlist the function of roots?

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2. Enlist the function of stem?

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3. Enlist the function of Leaf?

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4. Give 2 examples of each __

a. Herbs .................... , ......................

b. Shrubs .................... , ......................

c. Trees .................... , ......................

5. What are the main difference between a taproot and fibrous root?

Taproot Fibrous root.

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6. Fillup the following by using kewords given ____

Pistil, stem, root, anther, petal, filament.

i) The underground part of the plant is called _______________.

ii) The female reproductive part of the plant is _______________.

iii) The part of plant that conduct water and mineral is called __________.

iv) _________ and ___________ are parts of stamen.

v) ________ is the most attractive part of the flower

GENERAL SCIENCE Class-VII

REPRODUCTION IN PLANTS

Fill in the blanks:-

1 In -------- reproduction a new plant body is formed by a single parent .

2. A small bulb like structure found in yeast is called -------------.

3. The male gamete on the stigma reach the female gamete inside the ovary through ---------

4. Male gametes are present in the --------- and the female gametes are present in the ----------

5. After fertilization of the egg , ther ovary becomes ------and ovules become -----------.

Name the following :-

1.Two organisms which reproduce by budding

2.The method by which moss and ferns reproduce?

3. The type of flower which has both the male and the female reproductive parts?

4.A plant which multiply by fragmentation,

VERY SHORT ANSWER TYPE:

Q1. What happens when a leaf of bryophyllum falls on moist soil?

Q2. Write two examples of plants in which roots can give rise to a plant.

Q3. What are the parts of a pistil?

Q4. From where, fungi are grown on a bread piece?

Q5 List the agents which help in cross pollination.

Q6 Give examples of seeds dispersed by water, wind and insects.

Q 7 . What are spores?

SHORT ANSWER TYPE QUESTIONS

Q1. Differentiate between:

        i) unisexual flowers and bisexual flowers

        ii) asexual and sexual reproduction

        iii) self pollination and cross pollination

Q2. How is zygote formed in sexual reproduction?

Q3. How are plants benefited by seed dispersal?

Q4. How spores can survive for a long time?

Q5. In vegetative reproduction plants take less time to grow and bear flowers and fruits , than plants produced from seeds? Why?

Q6. How does the process of fertilization take place in flowers?

Q7. Write short notes on the following:

        a) budding                 b) fragmentation                         c) spore formation

Q8. What is the significance of dispersal of seeds .

Q 9 What are the characteristic features of seeds dispersed by water and animals?

Q10. Differentiate between stamen and pistil.

CELL- STRUCTURE AND FUNCTIONS

class 8

Q1. Fill Ups:

i. Cells were first observed in cork by ________________.

ii. ___________________ is the longest cell in our body.

iii. ______________ is the smallest cell known with a size of ____________ micrometer.

iv. ______________ is present in plant cell but absent in animal cell while, ___________ is present in animal cell and absent in plant cell.

v. ________________ in human blood is a single cell.

vi. A _______________ is a group of cells performing a specific function.

vii. _______________ are used to colour parts of the cell to study their details.

viii. The plastids responsible for green color of leaves is ____________________.

ix. __________ controls the transfer of a hereditary characteristic from parents to offspring.

x. _____________________ cells having nuclear material without nuclear membrane.

xi. The cells, like onion cells and cheek cells are example of __________________cells.

xii. ___________________ is a structure that contains more than one type of tissues.

xiii. The porous membrane that allows the movement of materials between the cytoplasm and the inside of the nucleus is ________________________________.