Science 1 Marks Question

Pitcher plant

Leaves contain chlorophyll that traps solar energy and takes in carbon dioxide from the air through stomata, for photosynthesis.

The mode of nutrition in plant is autotrophic, i.e. they synthesise their own food.

All organisms take food and utilize it to get energy for the growth and maintenance of their bodies.

Green plants are called autotrophy since they synthesis their own food.

Plants absorb mineral nutrients from soil. Thus, declining their concentration in soil fertilisers and manures enhance or add these essential nutrients back in soil.

Stomata.

Animals and human beings.

In desert plants to minimize water loss, leaves are reduced to spines. Most of the photosynthesis is carried by the green stem.

Our body does not contain chlorophyll for absorbing solar energy which is necessary for preparing food using air, water, etc.

Organisms which can prepare their own food from raw materials (like mineral and water) are called autotrophs. e.g. green plants.

Symbiosis.
Symbiosis is an association between two different organisms that live together and help each other to survive, e.g. Licher (association between an alga and fungus).

Leaves are referred to as food factories of plants. This is because, leaves synthesise food by the process of photosynthesis.

Leaves contain chlorophyll which is essential for food preparation and is absent in other parts of plant.

Croton plant leaves are partly green and partly non-green and chlorophyll is present only in green portion of these leaves.

False.

Cactus, the part where photosynthesis occurs are stem and branches which are green.

Green plants prepare their own food with the help of carbondioxide, water in presence of sunlight and chlorophyll. So, they are called autotrophs.

Insectivorous plants grow in soil which lack nitrogen, therefore they eat insects to fulfill their need of nitrogen.

Living organisms need food to build their bodies, to grow, to repair damaged parts of their bodies and provide with energy to carry out life processes.

A cell contains nucleus, cytoplasm, vacuole, cell organelles like chloroplast, mitochondria, etc. No, animal cells are different from plant cells.

Carbohydrates are composed of carbon, hydrogen and oxygen.

Insectivorous plants.

This is because our body cells do not contain the necessary apparatus for photosynthesis.

The main components presents in carbohydrates are carbon, hydrogen and oxygen.

Pitcher plant.

1. Chlorophyll.
2. Sunlight.
3. Carbon Dioxide.
4. Water.

Some plants have green or white or other colour parts in the same leaf. Such leaves are called variegated leaves. Examples are: croton, money plant and coleus.

Fungus produces antibiotics like penicillin used to treat diseases and fungus can also harm us by causing fungal infections on skin and hair.

All green plants.

Boiling the leaf remove chlorophyll/ green colour from the leaves.

Lichens.

During photosynthesis plants take in carbon dioxide and release oxygen.

Mushroom.

Carbon dioxide from the air is taken in through tiny pores present on the leaves called stomate surrounded by guard cells. Guard cells control the opening and closing of stomate. Oxygen is released from the stomate as a waste product of photosynthesis.

False.

Chlorophyll.

Joseph Priestley.

The leaves other than green also have chlorophyll. The large amount of red, brown and other pigments mask the green colour. Photosynthesis takes place in these leaves also.

Plants that live in association with other plants and share shelter and food are called symbiotic plants. Lichens show symbiotic relationship i.e. association of green alga and fungi. Green alga prepare food by photosynthesis while the fungi provide mineral and water.

Fungi.

Rhizobium bacteria.

Starch.

Rhizobium is the bacterium which can fix atmospheric nitrogen.

Plants need nitrogen to synthesize proteins.

No it does not have chlorophyll. It is a parasitic plant which absorbs food from readymade plants.

Haustoria.

Pitcher plant does not get the sufficient nutrients from plants. Therefore, it fulfils its requirement by eating insects.

Cuscuta.

Carbon dioxide + water → carbohydrate + Oxygen

Cuscuta plants.

Red japanese maple and purple leaf plum are non-green plants.

Cuscuta derives its nutrition using an association where it deprives its host of all valuable nutrients and absorbs them itself. Hence, it is called a parasitic plant.

Stomata are the tiny pores present on the surface of leaves through which gaseous exchange takes place in plants.

Farmers add nitrogen containing manure or fertilisers to the soil to replenish the nutrients. Growing pulses in the soil replenishes nitrogen in the soil thus making thesoil healthier.

1. Autotrophic.
2. Heterotrophic.

Leaves have the machinery for photosynthesis, i.e., chloroplasts, which contain green pigment.

Nutrition is the process in which an organism consumes food, which is then utilized by the body.

The food synthesised by the plants is stored as starch.

Insect-eating plants are known as insectivorous plants. Example: pitcher plant.

To detect presence of starch.

Because they contain green colour pigment chlorophyll.

Guard cells.

Parasites they are those organisms which grow on other plants or animals for their food, e.g. Cuscuta.

In the centre of cell.

Amarbel.

The process of utilising nutrients like carbohydrates, proteins, fats, etc., to generate energy is called nutrition.

Plants such as gram, pulses and beans are leguminous.

Carbohydrates, proteins, fats, vitamins and minerals.

The mode of nutrition in which organisms take their nutrients from dead and decaying matter is called saprotrophic mode of nutrition.

Carbohydrates, proteins, fats, vitamins and minerals are essential components of food, these components are called nutrients.

Nutrition is necessary for the proper functioning of the body and for growth and development.

Stomata.

Intensity of light, temperature and concentration of carbon dioxide affect the rate of photosynthesis.

Leaves.

Leaves of insectivorous plants catches the prey.

Chlorophyll, sunlight, carbon dioxide and water are necessary to carry out the process of Photosynthesis.

Carbohydrates in wheat dough encourage growth of yeast and other saprophytic fungi which break down carbohydrates, and emit a foul smell.

Nutrition is the mode of taking food by an organism and its utilisation by body.

Symbiotic relationship.

Because the synthesis of food occurs in presence of sunlight.

Proteins and fats.

Pitcher plant, Venus fly trap.

Algae contain chlorophyll which gives them green colour and because of chlorophyll it can also prepare their own food by photosynthesis.

Two partners are Algae and Fungi. They exhibit symbiotic relationship. The fungus provides shelter, water and minerals to the alga and, in return, the alga provides food which it prepares by photosynthesis.

Algae contain chlorophyll which imparts green colour to them.

During photosynthesis green plants take in carbon dioxide from the atmosphere and release oxygen as the end product. Thus, in the process they purify air.

Insectivorous plants are autotrophs, i.e. they prepare their own food. They are partial heterotrophs as they eat insects for obtaining nitrogen.

Symbiosis is the mutually benefitting association between two plants, e.g. lichens.

Pitcher plants and Venus flytraps are insectivorous plants.

Yes, these animals/ insects are parasites as they harm the hosts while they suck blood.

Water and minerals are transported to the leaves by the vessels which run like pipes throughout the roots, stem, branches and leaves. They form a continuous path orpassage for the nutrients to reach the leaf.

Guard cells help in controlling the opening and closing of stomata for gaseous exchange.

Sunlight/ light energy, carbon dioxide.

Stomata are the tiny pores present on the surface of leaves which helps in exchange of gases, the pores in stomata are surrounded by guard cells.

Chlorophyll is the green colour pigment which helps leaves to capture energy from sunlight to carry out the food making process of plants by the leaves.

The sun.

Pitcher plant.

Available during day: sunlight.
Available during day: sunlight (It is captured by chlorophyll in leaves and is converted into chemical energy).

Available in the air: carbon dioxide.
Available in the air: carbon dioxide (Enters through the tiny pores called stomata on the surface of leaves).

These are tiny pores present on the surface of leaves. Through stomata exchange of gases i.e. Carbon Dioxide and Oxygen take place. Loss of water also take place through stomata called transpiration.

Photosynthesis.

Available in the plant: chlorophyll.
Available in the plant: chlorophyll (Green pigment present in leaves that absorbs energy from sunlight).

Plants can use nitrogen only in soluble form while in soil nitrogen is present in inorganic form.

In sunflower seeds, glucose is stored in the form of oils (fats).

Pitcher plant (insectivorous plant)