Compare and Contrast Gas Exchange and Transport in Plants and Animals Quiz

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Questions and Answers

What is the primary function of stomata in leaves?

To regulate water loss

To absorb nutrients from the soil

To protect the plant from pathogens

To facilitate gas exchange (correct)

What is the term for the process by which oxygen is supplied to plant cells?

Diffusion (correct)

Photosynthesis

Osmosis

Respiration

What is the region between the upper and lower epidermal layers of a leaf called?

Parenchyma

Cuticle

Mesophyll (correct)

Epidermis

What type of cells make up the majority of the mesophyll?

Parenchyma cells Signup and view all the answers

What is the function of guard cells in plant leaves?

To regulate the opening and closing of stomatal pores Signup and view all the answers

Where does gas exchange occur in plants?

In leaves, roots, and stems Signup and view all the answers

What is the main objective of the lesson?

To compare and contrast gas exchange and transport/circulation in plants and animals Signup and view all the answers

What happens to living organisms if air cannot enter the body?

The body will not be able to obtain energy Signup and view all the answers

What is the process called when organisms require oxygen for metabolism?

Respiration Signup and view all the answers

What is the learning competency for this lesson?

To compare and contrast different biological processes in plants and animals Signup and view all the answers

What is the purpose of the pre-activity breathing exercise?

To help learners understand the process of respiration Signup and view all the answers

What is necessary for living organisms to obtain energy?

Oxygen Signup and view all the answers

What is the primary function of the circulatory system?

To support life by feeding cells with food and oxygen Signup and view all the answers

What is the term used to describe the general body fluid in an open circulatory system?

Hemolymph Signup and view all the answers

How many main parts are there in the circulatory system?

Three Signup and view all the answers

What is the heart approximately the size of?

A fist Signup and view all the answers

What is the location of the heart in the human body?

In the chest cavity, between the lungs Signup and view all the answers

What is the function of the lymphatic division of the circulatory system?

To return tissue to the blood Signup and view all the answers

What is the purpose of the air spaces in the spongy mesophyll?

To facilitate the exchange of CO2 and oxygen around the cells Signup and view all the answers

What is the function of root hairs in plant respiration?

To facilitate the diffusion of oxygen and carbon dioxide Signup and view all the answers

What is the primary location of gas exchange with the outside air in a leaf?

Stomata Signup and view all the answers

What is the function of lenticels in the stem of a plant?

To facilitate the exchange of respiratory gases Signup and view all the answers

What is the orientation of parenchyma cells in the palisade mesophyll?

Elongated and parallel to the leaf surface Signup and view all the answers

What is the primary source of oxygen for plant roots?

The air present in the soil particles Signup and view all the answers

What is the primary source of energy for organisms?

Glucose Signup and view all the answers

What is the function of root hairs in plant roots?

To absorb water and minerals Signup and view all the answers

What type of tissues form a continuous network of channels connecting roots to the leaves through the stem?

Xylem Signup and view all the answers

What is the process by which plants release a lot of water through evaporation from the leaves?

Transpiration Signup and view all the answers

What is the result of water evaporation from leaves in tall trees?

A suction pull that pulls water to great heights Signup and view all the answers

What is the purpose of vascular tissues in plants?

To transport water and nutrients from the soil Signup and view all the answers

Study Notes

Plant Gas Exchange

Plants do not have specialized organs for gas exchange like animals do.
Each part of the plant takes care of its own gas exchange needs.
Diffusion is the only process that supplies oxygen to all plant cells.
Diffusion occurs in leaves, roots, and stems.

Leaf Structure

Leaves have stomata (singular: stoma) that allow gas exchange between the surrounding air and photosynthetic cells inside the leaf.
Stomata regulate CO2 uptake for photosynthesis and are the major avenues for water evaporation.
A stoma refers to the stomatal pore flanked by two guard cells, which regulate the opening and closing of the pore.

Mesophyll

The mesophyll is a region between the upper and lower epidermal layers of a leaf.
Mesophyll consists mainly of parenchyma cells specialized for photosynthesis.

Root Gas Exchange

Plant roots take oxygen from the air present in between soil particles.
Root hair is in direct contact with the soil and oxygen diffuses into it, reaching all other cells of the roots.
Carbon dioxide is diffused into the roots and expelled through the root hairs.

Stem Gas Exchange

Lenticels in the stem allow gaseous exchange of respiratory gases between air and living cells of the woody stem.
Lenticels are small areas of the bark with loosely placed cells.

Plant Circulatory System

Plant roots absorb water and minerals through root hairs.
Vascular tissues (xylem and phloem) transport water and nutrients from the soil to the entire plant.
Xylem transports water and nutrients to the entire plant, while phloem transports sugars from the leaves to the rest of the plant.

Transpiration

Plants release a lot of water through transpiration.
Water evaporates through stomata on the surface of the leaves, generating a suction pull that pulls water to great heights in tall trees.

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Description

Test your knowledge of gas exchange and transport in plants and animals, including the structures and functions of the respiratory and circulatory systems. Compare and contrast these processes in both kingdoms and recognize their importance.

Gas Exchange and Transport in Plants and Animals