Amarbel is an example of

1

(a)

autotroph

(b)

parasite

(c)

saprotroph

(d)

host

The plant which traps and feeds on insects is

1

(a)

Cuscuta

(b)

China rose

(c)

pitcher plant

(d)

rose

Which part of the plant takes in carbon dioxide from the air for photosynthesis?

1

(a)

Root hair

(b)

Stomata

(c)

Leaf veins

(d)

Sepals

Plants take carbon dioxide from the atmosphere mainly through their

1

(a)

roots

(b)

stem

(c)

flowers

(d)

leaves

Organisms which prepare food for themselves using simple naturally available raw materials are referred to as

1

(a)

heterotrophs

(b)

autotrophs

(c)

parasites

(d)

saprophytes

In the process of photosynthesis, which of the following energy conversions occur?

1

(a)

Solar energy is changed into chemical energy

(b)

Solar energy is changed into mechanical energy.

(c)

Bioenergy is converted into chemical energy

(d)

Chemical energy is changed into light energy.

The raw material used by plants during photosynthesis

1

(a)

N₂ and O₂

(b)

O₂, H₂, CO₂

(c)

CO₂ and water

(d)

water and minerals

Which of the following statements is/are correct?
(i) All green plants can prepare their own food.
(ii) Most animals are autotrophs.
(iii) Carbon dioxide is not required for photosynthesis.
(iv) Oxygen is liberated during photosynthesis.
Choose the correct answer from the options below:

1

(a)

(i) and (iv)

(b)

only (ii)

(c)

(ii) and (iii)

(d)

(i) and (ii)

The symbiotic association is seen in which of the following?

1

(a)

Lichens

(b)

Algae

(c)

Fungi

(d)

Bacteria

Pitcher plant traps insects because it

1

(a)

is a heterotroph

(b)

grows in soils which lack in nitrogen

(c)

does not have chlorophyll

(d)

has a digestive system like human beings

Insectivorous plant among the following is

1

(a)

lichen

(b)

Cuscuta

(c)

pitcher plant

(d)

bread mould

In the plant of cactus leaves are modified into

1

(a)

branches

(b)

spines

(c)

leaf vein

(d)

pitcher

If iodine is dropped on the boiled leaf it gives blue-black colour due to the presence of

1

(a)

starch

(b)

protein

(c)

fat

(d)

vitamin

When we observe the lower surface of a leaf through a magnifying lens, we see numerous small openings. Which of the following is the term given to such openings?

1

(a)

Stomata

(b)

Lamina

(c)

Midrib

(d)

Veins

Two organisms are good friends and live together. One provides shelter, water and nutrients while the other prepares and provides food. Such an association of organisms is termed as

1

(a)

saprophyte

(b)

parasite

(c)

autotroph

(d)

symbiosis

In the process of photosynthesis, plants

1

(a)

take O₂ and release CO₂

(b)

take CO₂ and release O₂

(c)

take and release O₂

(d)

take O₂ and release water

Which of the following raw material is available in the air for photosynthesis?

1

(a)

Oxygen

(b)

Carbon dioxide

(c)

Nitrogen

(d)

Hydrogen

The ultimate source of food on earth is

1

(a)

plants

(b)

sunlight

(c)

animals

(d)

proteins

Farmers use manure and fertilisers to

1

(a)

replenish plant

(b)

replenish soil

(c)

replenish air

(d)

replenish fungi

The raw materials for photosynthesis are:

1

(a)

Oxygen and water

(b)

Carbon dioxide and water

(c)

Water, carbon dioxide, chlorophyll and solar energy

(d)

Nitrogen and water

Algae is:

1

(a)

Parasite

(b)

Saprotroph

(c)

Autotroph

(d)

None of these

Which one of the following is parasite?

1

(a)

Lichens

(b)

Algae

(c)

Cuscuta

(d)

Fungus

During photosynthesis:

1

(a)

Carbon dioxide is released

(b)

Oxygen is released

(c)

Nitrogen is released

(d)

None of these

Insectivorous plant is :

1

(a)

Mushroom

(b)

Mango tree

(c)

Pitcher plant

(d)

Algae

Lichens are the association of :

1

(a)

An autotroph and a saprotroph

(b)

An autotroph and a heterotroph

(c)

A green plant and non-green plant

(d)

All of the above

The tissue responsible for the transportation of food in plants:

1

(a)

Xylem

(b)

Phloem

(c)

Stomata

(d)

Root hair

In the absence of which of the following will photosynthesis not occur in leaves?

1

(a)

Guard cells

(b)

Chlorophyll

(c)

Vacuole

(d)

Spacebetween cells

The term that is used for the mode of nutrition in yeast, mushroom and bread-mould is :

1

(a)

autotrophic

(b)

insectivorous

(c)

saprophytic

(d)

parasitic

During photosynthesis, plants take in ___________ and release ____________

1

(a)

carbon dioxide, oxygen

The association where two participating plants mutually benefit each other is called ______________

1

(a)

symbiosis

The openings present on the surface of leaves are protected by cells called _____________

1

(a)

guard cells

Leaves are called the _____________ of plants.

1

(a)

food factory

Cuscuta is a ___________ plant.

1

(a)

parasitic

Photosynthesis along with other raw materials like ................

1

(a)

Carbon dioxide

I live in water; people keep me in an aquarium and feed me .............. , ................

1

(a)

fish, heterotroph

I am small and I can fly. I disturb your sleep, bite you and suck your blood which is my food ............. , ................

1

(a)

mosquito, parasite

Fill in the blanks of the paragraph given below with the words provided in the box. chlorophyll, energy, food, carbon dioxide, water photosynthesis
Note: A word can be used more than once.
Leaves have a green pigment called ...................... (a) ...................... which captures ...................... (b) ...................... from sunlight. This ...................... (c) ...................... is used in the process of ...................... (d) ...................... and along with other raw materials like ...................... (e) ...................... and ...................... (f) ...................... synthesis ...................... (g) ......................

1

(a)

(a) chlorophyll
(b) energy
(c) energy
(d) photosynthesis
(e) Carbon dioxide
(f) water.
(g) Food/Carbohydrates

Can you give me a name?
Solve each of the following riddles by writing the name of the organism and its mode of nutrition. One riddle is solved to help you.
(a) I am tall but I cannot move. I am green and can prepare my own food. Tree, autotroph.
(b) I live in water, people keep me in an aquarium and feed me ......................, .......................
(c) I am small and I can fly. I disturb your sleep, bite you and suck your blood which is my food. ......................, .......................
(d) I am white and soft. I grow well in the rainy season. Children pluck me from the ground and admire me. I absorb nutrients from decomposed dead parts of plants and animals in the soil ......................

1

(a)

(b) fish, heterotroph
(c) mosquito, parasite
(d) mushroom, saprophyte

Carbon dioxide is released during photosynthesis

1

(a) True

(b) False

Plants which synthesise their food themselves are called saprotrophs.

1

(a) True

(b) False

The product of photosynthesis is not a protein.

1

(a) False

(b) True

Solar energy is converted into chemical energy during photosynthesis.

1

(a) False

(b) True

Food is necessary for plants only.

1

(a) True

(b) False

Animals are heterotrophs.

1

(a) False

(b) True

Cells are called building block of a body.

1

(a) False

(b) True

Chlorophyll is present in an animal cell.

1

(a) True

(b) False

Fungi are green plants that can synthesise their own food.

1

(a) True

(b) False

Pitcher plant eats insects.

1

(a) False

(b) True

Lichen is a saprophytic plant.

1

(a) True

(b) False

Rhizobium can fix atmospheric nitrogen into nitrogen compound.

1

(a) False

(b) True

Name the following a parasitic plant with yellow, slender and tubular stem.

1

(a)

Cuscuta (amarbel)

Name the following a plant that has both autotrophic and heterotrophic mode of nutrition.

1

(a)

Pitcher plant (insectivorous plant)

Name the following the pores through which leaves exchange gases.

1

(a)

Stomata

Plants like cuscuta takes food from .............. plant.

1

(a)

Host

............ is produced and ..............is utilised during photosynthesis.

1

(a)

Oxygen, carbon dioxide

All green plants are called ...............

1

(a)

Autotrophs

Chlorophyll is the site of reception of ............ energy during photosynthesis.

1

(a)

Light

The organisms which depend on other for their food are called ...................

1

(a)

Heterotrophs.

The components of food are called ..................

1

(a)

Nutrients.

Tiny pores present on the surface of the leaves are called ..................

1

(a)

Stomata

Algae are .........

1

(a)

Autotrophs

The bacteria Rhizobium lives in the roots of ...........

1

(a)

Legumes (pulses)

The symbiotic relationship between algae and fungi is called ................

1

(a)

Lichens.

Spot as many organisms as possible in the puzzle given as figure by encircling them as shown. Write the names on an sheet of paper and categorise them into autotrophs and heterotrophs. Classify the heterotrophs into herbivores, carnivores, omnivores and saprophytes.

1

(a)

Number of organisms: 22
(Some examples are given. You many find the rest of the organisms)

Autotrophs - Rose, Mango, Bhindi, Carrot Banyan, Tulsi,Ginger, Yam.
Heterotrophs - Elephant, Ant, Yeast, Tiger,Mushroom, Fox,Mice, Owl, Cow, Crow, Rabbit, Bee, Fish
Herbivores - Elephant, Cow, Rabbit, Bee
Carnivores - Fox,Tiger
Omnivores - Ant, Mice, Owl, Crow, Fish
Saprophytes - Mushroom, Yeast.

What are Nutrients?

1

(a)

The compounds or components of food which are necessary for our body are called nutrients.

What is the mode of nutrition in plants?

1

(a)

Autotrophic.

What is the mode of nutrition of human and other animals?

1

(a)

Heterotropic

State whether food is made in all parts of plants or only in certain parts.

1

(a)

The food is made mainly in leaves and some green parts of the plants.

What is the function of chlorophyll ?

1

(a)

Chlorophyll captures the energy from the sunlight for the photosynthesis.

Write the equation of photosynthesis

1

(a)

Carbon dioxide + Water \(\overset { Sunlight }{ \underset { Chlorophyll }{ \xrightarrow{} } } \) Carbohydrate + Oxygen
CO₂ + H₂O \(\overset { Sunlight }{ \underset { Chlorophyll }{ \xrightarrow{} } } \) C₆H₁₂O₆ + O₂

Given an example of a parasitic plant.

1

(a)

Cuscuta (Amarbel).

In which form saprotrophs take their food?

1

(a)

Saprotrophs take their food in solution form from dead organic matter.

Write the three main parts of the cell.

1

(a)

(i) Cell membrane (ii) Nucleus (iii) Cytoplasm.

What are proteins?

1

(a)

Proteins are the nitrogenous substances which contains nitrogen with carbon, hydrogen and oxygen.

Name the substances from which plants get nitrogen.

1

(a)

Fertilizers and manures.

Can plants use nitrogen in the manner they use carbon dioxide?

1

(a)

The plants can not use nitrogen in the manner they use carbon dioxide. They need N₂ in soluble form.

In which form plants use nitrogen?

1

(a)

Soluble form (soluble nitrates).

Name the bacteria which converts atmospheric nitrogen into a soluble form.

1

(a)

Rhizobium bacteria.

Where do Rhizobium bacteria live?

1

(a)

They live in the roots of legumes such as gram, peas and other pulses.