Through their bark

Through the roots

Through the stem

From the air into leaves

None of these

abiotic disease

both of them

biotic disease

2-3 million

7-8 million

5-6 million

4-5 million

To increase blood flow

To prevent blood loss and entry of pathogens

To regulate body temperature

To lower blood pressure

Veins

Arteries

Capillaries

Arterioles

High temperature

Low humidity

High humidity

High wind speed

It allows quick delivery of fully oxygenated blood at high pressure while protecting delicate lung capillaries

It compensates for low oxygen levels by increasing the heart rate and blood volume

It uses a single circuit that recirculates oxygenated blood multiple times before distribution

It balances oxygen and carbon dioxide levels by direct mixing in the heart chambers

They store water and inorganic ions along with the phloem

They actively transport water from the roots to the leaves

They provide structural support to the xylem vessels

They are closely associated with sieve tubes to assist in nutrient translocation

Potassium

Calcium

Magnesium

Sodium

Alanine

Glycine

Methionine

Serine