Question

Tell me few points on plastids. Their types. And book ; ncert anyone from 9th class....

100 points wow

Answer 1

$\huge{ \underline{\underline{ \mathfrak{Plastids :}}}}$

Plastids. They're present in plants.

⭐ Plastids containing chlorophyll pigment are also known as chloroplasts. ( important for photosynthesis )

⭐ Leucoplasts are primary organelles in which starch, oils & protein organelles are stored.

⭐ The matrix within the chloroplast which encloses grana is known as stroma ( It contains enzymes necessary for dark reaction)

⭐ In the presence of light, green plastids or chloroplast manufactures carbohydrates from water & CO2.

⭐ Basically, Plastids are of 2 types.

→ Chromoplast - Coloured Plastids.

→ Leucoplast - Colourless / White Plastids.

Answer 2

PLASTIDS:

> These are membrane bound cell organelles present in plants.

> They were discovered by Ernst Haeckel.

> There are main 4 types of Plastids.

• Chloroplast
• Leucoplasts
• Chromoplast
• Gerontoplast

> Chloroplast: It contains a green pigment called chlorophyll, essential for photosynthesis.

> Leucoplasts: These are colourless Plastids. And also help in storage. Leucoplasts are also differentiated as:-

• Proteinoplast: Storage of Proteins.
• Amyloplast: Storage of Starch.
• Elaioplast: Storage of Fats.

> Chromoplast: It contains coloured pigments. These are responsible for different colours of fruits, flowers, leaves etc.

> Gerontoplasts: These help in storage and synthesis of food.