CURIOUSITY QUIZ: PLANTS

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Test Your knowledge on 'Plants' prepared exclusively according to the DAV School curriculum of 'My Living World' and the NCERT curriculum of 'Looking Around' for Class-5 . Attempt all the questions by clicking on the right option. Submit the completed Form by clicking the 'Submit' button at the end of the Form. Get your Score and the correct Answer by clicking the 'View score' button. Good Luck! (Although the quiz is primarily meant for Class-5, students from Class-6 to Class-10 can, however, participate and enjoy the fun of the quiz.)

Before attempting the quiz, you may read an overview of the topic given below which will make you feel easier to answer the questions.

Overview:

The plants are unique in nature as they only can prepare their own food because of the presence of a wonder pigment called chlorophyll in their leaves in a process called photosynthesis. Many breathing holes called Stomata are also present on the surface of leaves for exchange of gasses between the plants and the surroundings. Plants take in Carbon dioxide gas from the air and water from the soil through their roots and convert them to carbohydrates in the presence of sunlight. There are certain insectivorous plants in nature like the Pitcher plant and the Venus Flytrap plant which feed on insects to supplement their protein requirements as they used to grow on soils with poor nitrogenous salt content. Vegetative reproduction of plants consists of reproduction by their vegetative parts like leaf, stem and root. Another kind of reproduction involves the formation of seeds in specific parts of their flowers that attract insects for pollination, a process in which seeds are formed. The seed is covered by a hard Seed coat to protect the seed from external shocks. Cotyledons are the seed leaves that store food for the baby plants. Seeds require the right conditions of air, water and warmth for germination, the process by which a seed grows and develops into a young plant. All the seeds of a plant do not germinate because they don't get all these favourable conditions. The process of transfer of seeds to different places from the original ant is called the Seed dispersal.Various natural agents like wind water, birds, humans and animals help in seed dispersal. Some fruits also burst or crack naturally dispersing their seeds.

Now, attempt the quiz.

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Which are called the factories of the plants as these are the sites of photosynthesis? What are the end products of photosynthesis?

1 point

Leaves (Carbohydrate and Oxygen)

Leaves (Carbohydrate and Carbon dioxide))

Leaves (Carbohydrate and Water vapour))

Stems (Carbohydrate and Oxygen)

Clear selection

Why are the green plants in nature are only able to prepare their own food?

1 point

The green plamts possess leaves ehich are the sites of food production.

The green plants csn easily coolect carbon dioxide gad from the air and convert it to carbohydrates

The green plants can easily trap Sun's energy to transform into food.

They contain a green colour pigment called Chlorophyll.

Clear selection

The process of photosynthesis is basically a:

1 point

Chemical process only

A physical process only

A photo-sensitive process only

A photo-chemical process.

Clear selection

Stomata are the breathing holes of the plants present on the leaf surface. Where are most breathing holes present on the leaf surface?

1 point

Upper surface

Lower Surface

Both Upper and Lower surface

Near the leaf margin

Clear selection

Why do some insectivorous plants used to feed insects in addition to the food they prepare ?

1 point

To supplement their carbohydrate requirement as they grow in soil with poor carbohydrate content.

To get valuable enzymes needed for photosynthesis

To keep a check on the insect population which are threats to their population.

To supplement their protien requirement as they grow in soil with poor nitrogenous salt content.

Clear selection

How does the Pitcher plant trap the insects it feeds?

1 point

It catches the insects by its hook like structures.

It catches the insects by its thorny leaves.

It catches the insects by curling its leaves around the insects.

It catches the insects by trapping them in its sticky secretions inside the pitcher like organs.

Clear selection

How does a the Venus Fly Trap plant catch insects ?

1 point

It catches the insects by its hook like structures.

It catches the insects by its trapping organs formed at the terminal portions of its leaves triggered by sensitive hair like structures

It catches the insects by trapping them in its spider web like nets..

It catches the insects by trapping them in its sticky secretions.

Clear selection

Cotton seeds are able to be dispersed in wind easily over a long distance creating new plants, because :

1 point

The seeds can fly easily in air because of their wings like structures.

The cotton fruit containing the seeds burst with a considerable force throwing the sseds quite some distance away.

The seeds are small and light and have hairy structures all around allowing them to fly easily by winds over considerable distance.

The seeds are very small to be easily dispersed by winds.

Clear selection

A healthy Birch tree can produce one million seeds a year. Although most plants produce a large number of seeds annually, their population do not increase appreciably. Why ?

1 point

Most seeeds, when germinated, fail to compete with other baby plants.

Most seeds are washed away by water and blown away by winds.

Most seeds that drop in the soil do not germinate into plants because of the lack of favourable conditions.

Most seeds are eaten away by insects and rodents.

Clear selection

What are the role of cotyledons for plants ?

1 point

They help to collect sunlight for the baby plants needed for photosynthesis.

They absorb water from the soil for baby plants.

They collect Carbon dioxide gas from the air for photosynthesis to happen

They store food for baby plants.

Clear selection

What was the name of the instrument that J.C Bose did invent for measuring the plant growth?

0 points

Auxonometer

Growthmeter

Crescograph

Pedometer

Clear selection

Which part of the plant is responsible for the kind of reproduction associated with seed formation?

1 point

Petiole

Sepal

Flower

Petals

Clear selection

Often, some plants have flowers which are brightly coloured. Why?

1 point

To get camoflaged with the surroundings to avoid being eaten away by predators.

To attract people to admire.

To attract insects for pollination.

To trap more amount of sunlight for photosynthesis.

Clear selection

I am a starchy stem tuber growing underground . Although I have Eyes, I can't see with them; but can produce many young ones through them. Who am I?

1 point

Ginger

Potato

Beet

Sweet Potato

Clear selection

My tuber roots growing underground are widely used as spice and for folk medicine. I was first domesticated in South-east Asia. I am known for my aromatic, spicy and pungent flavour. Who am I?

1 point

Potato

Sweet Potato

Ginger

Carrot

Clear selection

How are coconut seeds often able to be drifted over long distances in the sea for seed dispersal at faraway places?

1 point

It has a hollow cavity making it lighter to float.

It has a hard shell that protect it from predators and salty sea water.

It has a fibrous mesocarp that makes it lighter to float and easier tp be drifted away.

All the above answers are correct.

Clear selection

The seeds of the plant Chockleburr are able to get stuck to the bodies of animals and get dispersed. How?

1 point

The seeds are sticky and can easily get stuck to the fur of animals' body.

The seeds have spines that get stuck to the bodies of animals.

The seeds get stuck to the bodies of animals by magnetic action.

The seeds get stuck to the bodies of animals by vacuum sucking mechanism

Clear selection

Hura crepitans is an evergreen tree of the spurge family (Euphorbiaceae), native to tropical regions of North and South America including the Amazon rainforest. It is often called the Dynamite tree, because:

1 point

Its fruits when ripe , explode with a loud bang to throw away the seeds over a considerable distance (30 ft).

It grows very fast like the explosion of Dynamite.

Its flowers make loud sound like Dynamite when bloom.

Its branches always collide with one another due to the winds making loud sound like a dynamite.

Clear selection

Rose plant is generally vegetatively propagated by:

1 point

Root cutting

Stem cutting

Root grafting

Stem grafting

Clear selection

I am a large, sweet, starchy tuber root grown underground widely used as root vegetable in many countries. Can you identify me?

1 point

Potato

Beet

Sweet Potato

Carrot

Clear selection

I am a common medicinal plant used in traditional medicines for curing various infections, bowel diseases, healing wounds and other ailments. I am notable for my remarkable ability for vegetatively growing small plantlets on the fringes of the leaves which eventually drop off to root. Can you identify me?

1 point

Pitcher plant

Asparagus

Bryophyllum

Dandelion

Clear selection

A small opening present on the surface of an ovule (seed), through which the pollen tube penetrates, often visible as a small pore in the ripe seed is called:

1 point

Seed coat

Cotyledon

Micropyle

Eye of the seed

Clear selection

Which part of the seed does help to protect the embryo from mechanical injury, predators, and drying out?

1 point

Cotyledon

Seed coat

Micropyle

Eye of the seed

Clear selection

The filaree (Erodium cicutarium), a small, flowering plant related to geraniums, possesses a unique seed dispersal mechanism: the plant can fling its seeds up to half a meter away. The seeds can bury themselves by drilling into the ground, twisting and untwisting in response to changes in the climatic condition of :

1 point

Windflow

Tempersture

Humidity

Pressure

Clear selection

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