Botany

Structure of phloem consists all below, except?

• Sieve tube element

• Tracheids

• Companion cell

• Sieve plate

What is the most abudant solute in phloem sap?

• amino acids

• hormones

• sugar

• minerals

What happens first during translocation in the phloem?

• water enters the sieve tubes by osmosis

• sucrose enters the sieve tubes by active transport

• water leaves the sieve tubes by osmosis

• sucrose leaves the sieve tubes by active transport

Identify the picture.

• Stomata

• Lenticels

• Companion cell

• Xylem

Movement of anything from an area of high concentration to low concentration.

• Diffusion
• Hypotonic
• Isotonic
• Passive Transport

The amount of energy that usually transfers from one trophic level to the next...

• 10%
• 20%
• 80%
• 50%

Which one of the following known as "maiden hair" fern?

• Zinkgo

• Gnetum

• Adiantum

• Lycopodium

Which part of the plant transfer water?

• Xylem

• Pholem

• Leaf

• Roots