Plant Cells

Question 1

What are chloroplasts

Answer 1

Chloroplasts are sites of photosynthesis.
Has membrane on inside which forms stacks (sites of photosynthesis).
Has own ribosomes and their own DNA.

Question 2

Amyloplasts

Answer 2

Amyloplasts are storage vacuoles in cytoplasm. Contain starch and have double membrane on outside.

Question 3

Cell wall

Answer 3

Cell wall is membrane of cell that forms external to cell membrane

Question 4

Role of cell wall

Answer 4

Role of cell wall is to give cell rigidity, strength and protection against mechanical stress.

Question 5

Vacuole

Answer 5

Vacuole is a membrane bound vesicle in cytoplasm.
Involved in storage and support.
When cell takes up water (turgid), vacuole keeps plant stable

Question 6

Functions of vacuole

Answer 6

Functions of vacuole include: intracellular secretion (synthesizing and releasing substances from interior of cell to exterior), excretion, storage and digestion.

Question 7

Tonoplast

Answer 7

Tonoplasts are cytoplasmic membrane surrounding vacuole, separating vascular contents from cytoplasm

Question 8

Plasmodesmata

Answer 8

Plasmodesmata is a microscopic channel of plants facilitating transport and communication between individual cells. The cells are connected by strands of cytoplasm

Question 9

Middle lamella

Answer 9

Middle lamella is region found between cell walls of adjacent cells. Has pectin

Question 10

Pits

Answer 10

Pits are places where cell wall is thin, so only 1 layer of cellulose is deposited. Pits are pores going through cell wall. Only found in plant cells. Allow exchange of material between plant cells