STD 11 - 13. Plant growth and development — NEET STD 11 Science — Question

Fibres associated with phloem are...... .fibres.

Which one of the following histone is not present in the core particle of nucleosome

“Mitchell's chemiosmotic theory” belongs to

Choose the correct one for Phaeophyceae from given statements.
i. The members of Phaeophyceae are found primarily in freshwater habitats.
ii. Kelps is simple branched, filamentous form while Ectocarpus is profusely branched form, which may reach at height of 100 metres.
iii. They possess chlorophyll-a, c, carotenoids and xanthophylls.
iv. They vary in colour from olive green to various shades of brown.
v. Colour depending upon the amount of the xanthophylls and fucoxanthin pigment.

Which of the following statements is incorrect with reference to lysosomes

Syngamy means

Primary vascular tissues are derived from