Plants and Life on Earth

How many kinds of plants grow on Earth?

• 100,000

• 200,000

• 350,000

• 500,000

Answer explanation

Approximately 350,000 plant species are known to exist on Earth, making this the correct choice. This number includes a wide variety of flowering plants, ferns, mosses, and more.

Plants make their own food through a process called ________.

Answer explanation

Plants make their own food through a process called photosynthesis, where they convert sunlight, carbon dioxide, and water into glucose and oxygen.

Tags

CCSS.L.4.6

CCSS.RI.4.4

Match the following:

• Oxygen

• Process plants use to make food

• Carbon Dioxide

• Taken in by plants

• Photosynthesis

• Given off by plants

Tags

CCSS.L.4.6

CCSS.RI.4.1

CCSS.RI.4.3

CCSS.RI.4.4

During photosynthesis, plants take in​ (a)   and give off (b)   .​ ​ ​ ​

• oxygen

• water

• minerald

• carbon dioxide

Answer explanation

During photosynthesis, plants take in carbon dioxide and give off oxygen. This process is essential for converting light energy into chemical energy, producing oxygen as a byproduct.

Tags

CCSS.RI.4.1

CCSS.RI.4.2

CCSS.RI.4.3

People breathe in (a)   given off by plants and breathe out​ (b)  

• oxygen
• water
• sunlight
• carbon dioxide

Tags

CCSS.L.4.4A

CCSS.L.4.6

CCSS.RI.4.1

CCSS.RI.4.3

CCSS.RI.4.4

Every kind of food eaten by people comes directly or indirectly from ______.

Answer explanation

Every kind of food consumed by people originates from plants, either directly as fruits and vegetables or indirectly through animals that eat plants. Thus, the correct answer is 'plants'.

Unlike animals, plants make their own ______.

• food

• shelter

• water

• oxygen

Answer explanation

Unlike animals, which obtain food from other sources, plants are autotrophs that produce their own food through photosynthesis, using sunlight, carbon dioxide, and water.

Tags

CCSS.L.4.6

CCSS.RI.4.1

CCSS.RI.4.2

CCSS.RI.4.4

The roots of plants gather ______ and minerals from the soil.

Answer explanation

The roots of plants gather water and minerals from the soil. Therefore, the correct answer to fill in the blank is 'water', as it is essential for plant growth and nutrient absorption.

Tags

CCSS.L.4.4A

CCSS.L.4.6

CCSS.RI.4.1

CCSS.RI.4.3

CCSS.RI.4.4

In photosynthesis, the green leaves of plants soak up ______.

• water

• carbon dioxide

• oxygen

• pollen

Answer explanation

In photosynthesis, plants use sunlight to convert carbon dioxide and water into glucose and oxygen. Therefore, the correct answer is sunlight, as it is essential for the process.

Tags

CCSS.RI.4.1

CCSS.RI.4.3

Plants use sunlight, carbon dioxide, water, and ______ to make their own food.

Answer explanation

Plants use sunlight, carbon dioxide, water, and minerals to make their own food through photosynthesis. Minerals provide essential nutrients that support growth and development.

Tags

CCSS.RI.4.1

CCSS.RI.4.3

CCSS.RI.4.4