Biology: Homeostasis and Plant Functions

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Questions and Answers

Which of the following is NOT a factor that needs to be regulated for homeostasis?

Internal temperature
Water levels
Muscle strength (correct)
Blood glucose concentration

Homeostasis involves regulating factors that ensure reactions involving enzymes occur at optimal rates.

True (A)

What is homeostasis?

The ability of an organism to regulate its internal conditions.

An organism regulates its internal conditions such as blood glucose concentration, internal temperature, and ______ levels.

water Signup and view all the answers

Match the following regulatory factors with their importance:

Blood glucose concentration = Energy supply regulation Internal temperature = Enzyme activity optimization Water levels = Fluid balance and function pH levels = Acid-base balance Signup and view all the answers

What is the primary function of the leaf in a plant?

Photosynthesis and gas exchange (D) Signup and view all the answers

The xylem transports nutrients bidirectionally throughout the plant.

False (B) Signup and view all the answers

What is the primary role of the phloem in plants?

To transport sugars and nutrients to where they are needed. Signup and view all the answers

Water enters the plant through the roots by and mineral ions by .

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What is the main function of the xylem in a plant?

Carry water and dissolved minerals upwards (A) Signup and view all the answers

What is the role of the root system in a plant?

Absorption of water and minerals Signup and view all the answers

In plants, the process of __________ refers to the upward movement of water through the xylem.

transpiration Signup and view all the answers

Match the plant parts with their primary functions:

Leaf = Photosynthesis and gas exchange Flower = Reproductive organs Meristem = Stem cell production Phloem = Transport of sugars and nutrients Signup and view all the answers

Flashcards

Homeostasis

A process that allows living things to maintain a stable internal environment - like staying at a comfortable temperature.

Blood glucose regulation

The concentration of glucose in the blood needs to be regulated for cells to get the energy they need.

Internal temperature regulation

The body's internal temperature needs to stay within a narrow range for enzymes to function properly.

Water level regulation

Water levels in the body must be balanced for cells to function properly, and to prevent dehydration.