Question

Define nucellus. (Class 12th)​

Answer 1

$\huge\tt\orange{Answer:}$

Tʜᴇ ᴍᴜʟᴛɪʟᴀʏᴇʀᴇᴅ ᴍᴀɪɴ ʙᴏᴅʏ ᴏғ ᴛʜᴇ ᴏᴠᴜʟᴇ ɪs ᴄᴀʟʟᴇᴅ Nᴜᴄᴇʟʟᴜs ᴀɴᴅ ɪʏ ɪs ᴇɴᴄʟᴏsᴇᴅ ɪɴ ᴏɴᴇ ᴏʀ ᴛᴡᴏ ᴘʀᴏᴛᴇᴄᴛɪᴠᴇ ʟᴀʏᴇʀs ᴄᴀʟʟᴇᴅ Iɴᴛᴇɢᴜᴍᴇɴᴛs.

Hᴏᴘᴇ ᴛʜɪs ʜᴇᴘʟs ᴜʜʜ...

Pʟᴢ ᴍʀᴋ ᴀs ʙʀᴀɪɴᴀʟɪᴇsᴛ.

❥︎ Tʜɴᴋᴇᴡ_!!! ㋛︎

Answer 2

$\huge\mathbf\red{Question}$

$\mathbf\green{Define \: nuclleus \: ?}$

$\mathbf\blue{Answer}$

It is part of the inner structure of the ovule, forming a layer of diploid (sporophytic) cells immediately inside the integuments. It is structurally and functionally equivalent to the megasporangium.

$\mathbb\purple{Uses \: -}$

1. The tissue that makes up the greater part of the ovule of seed plants.
2. It contains the embryo sac and nutritive tissue.
3. It is enclosed by the integuments except for a small gap, the micropyle.
4. In certain flowering plants it may persist after fertilization and provide nutrients for the embryo.

$\huge\mathbf\red{What \: is \: nucleus \: ?}$

• The nucleus is a spherical-shaped organelle that is present in every eukaryotic cell.
• The Nucleus is the control centre of eukaryotic cells. It is also responsible for the coordination of genes and gene expression.
• The structure of the nucleus includes nuclear membrane, chromosomes, nucleoplasm, and nucleolus.

$\mathtt\orange{outline \: structure -}$

1. A double-membraned organelle known as the nuclear membrane/envelope engirdles the nucleus.
2. The nucleolus is found within the nucleus, occupying 25% per cent of the volume.
3. Thread-like, dense structures known as chromatins are found within the nucleus containing proteins and DNA.
4. The mechanical strength for the nucleus is provided by the nuclear matrix, a network of fibres and filaments which performs functions similar to the cytoskeleton.

$\mathbf\purple{mark \: me \: as \: brainlist .}$