Grade 10 Biology Worksheet: Plants (Challenge Practice)

Plants Challenge Practice

Grade 10 Biology Plants Challenge Practice Easy 30 Questions 13 Views

Classroom Worksheet

Grade 10 Biology Worksheet: Plants (Challenge Practice)

Plants Challenge Practice

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Grade: Grade 10

Subject: Biology

Topic: Plants

Time: 20 Minutes

Difficulty: Easy

Questions: 30

Instructions:
Read each question carefully. Answer in complete sentences where needed. Work from the first question to the last, since the questions increase in difficulty. Show your thinking when a question asks you to explain or compare.

Skills Practiced:

Plants
Biology
Critical Thinking
Problem Solving

1Question

What is the main function of roots in a plant?

2Question

What part of a plant usually makes food using sunlight?

3Question

What gas do plants take in from the air during photosynthesis?

4Question

What gas do plants release during photosynthesis?

5Question

Name the green pigment in plant leaves that helps absorb light.

6Question

What is the name of the process by which plants make their own food?

7Question

What are the tiny openings on leaves called that allow gas exchange?

8Question

Which plant tissue transports water from the roots to the rest of the plant?

9Question

Which plant tissue transports sugars made in the leaves to other parts of the plant?

10Question

What is the main job of the stem in most plants?

11Question

Why do most leaves have a broad, flat shape?

12Question

What two raw materials are needed for photosynthesis?

13Question

What energy source is needed for photosynthesis?

14Question

What is the main product of photosynthesis that the plant uses for energy and growth?

15Question

Give one reason why plants are important to animals and humans.

16Question

What is transpiration?

17Question

How does transpiration help a plant move water upward?

18Question

Name one adaptation of desert plants that helps them survive dry conditions.

19Question

Why do some leaves have a waxy cuticle?

20Question

What is the difference between a taproot and a fibrous root system?

21Question

Why is chlorophyll usually found in the chloroplasts of plant cells?

22Question

What part of the leaf contains many chloroplasts and is the main site of photosynthesis?

23Question

Explain why plants need both xylem and phloem.

24Question

How do guard cells help control gas exchange in a leaf?

25Question

What might happen to a plant if its stomata stayed closed for a long time?

26Question

Why is the root hair cell well adapted for absorbing water?

27Question

What is the function of flowers in flowering plants?

28Question

What is pollination?

29Question

How do fruits help in the life cycle of a flowering plant?

30Question

Challenge: Explain how the structure of a leaf helps it carry out photosynthesis efficiently.

Answer Key

#	Answer
1	Roots hold the plant in place and absorb water and minerals from the soil.
2	The leaves usually make food using sunlight.
3	Plants take in carbon dioxide.
4	Plants release oxygen.
5	Chlorophyll.
6	Photosynthesis.
7	Stomata.
8	Xylem.
9	Phloem.
10	The stem supports the plant and helps transport materials between roots and leaves.
11	A broad, flat shape gives leaves a large surface area to absorb more sunlight.
12	Carbon dioxide and water.
13	Light energy from the Sun.
14	Glucose, a sugar.
15	Plants provide oxygen, food, and habitats. One valid reason is that they provide oxygen.
16	Transpiration is the loss of water vapor from a plant, mainly through the stomata in leaves.
17	As water evaporates from the leaves, it creates a pull that helps draw water upward through the xylem.
18	Examples include thick stems, small leaves, spines, or waxy cuticles.
19	A waxy cuticle helps reduce water loss from the leaf.
20	A taproot system has one main thick root, while a fibrous root system has many thin roots spreading out near the surface.
21	Chlorophyll is found in chloroplasts because that is where photosynthesis takes place.
22	The mesophyll cells, especially the palisade mesophyll, contain many chloroplasts.
23	Plants need xylem to transport water and minerals, and phloem to transport sugars made during photosynthesis.
24	Guard cells open and close the stomata to control the movement of gases and water vapor.
25	The plant would not get enough carbon dioxide for photosynthesis and could begin to wilt from lack of water movement and gas exchange balance.
26	Root hair cells have a large surface area, which helps them absorb more water and minerals.
27	Flowers are the reproductive structures of flowering plants and help produce seeds.
28	Pollination is the transfer of pollen from the anther to the stigma of a flower.
29	Fruits protect seeds and help with seed dispersal.
30	A leaf is broad to capture lots of sunlight, thin so light and gases can move through easily, and has many chloroplasts to absorb light. Its stomata allow carbon dioxide to enter, and veins transport water in and sugars out.