Phloem is the conducting tissue, which is removed in girdling as it forms a part of the bark.

This is the region where unipolar neurons are present.

This is true about myelinated nerve fibres whereas collateral nerve fibres are absent in non myelinated fibres.

Synaptic knobs are present in the branches of axons.

This is present in parotid gland and urethra of human males.

They are the complex polymers of amino acids.

 Penicillium notatum, an ascomycotic fungi is used to extract penicillin which is a very important antibiotic.

Cytokinin is a group of plant hormones which is mainly responsible for cell division in roots and shoots.

 The Avery-Macleod-McCarty experiment was carried out by three scientists to show that transformation in bacteria is caused by taking up free DNA by bacteria either naturally or artificially in lab.

Cilia are long cellular appendages and are very thin.

Iron helps in energy metabolism.

Chlamydospore is the resting stage of spores formed by nuclear fusion of haploid cells in fungi also known as zygospore.

 Lysigenous cavities are formed by the autolysis or degeneration of glandular cells, so that secretions from cells are poured into the space formed.

 Rhizopus nigricans is the name of bread mould which belongs to zygomycota division of fungi.

 A nitrogenous base linked to sugar in the structure without the phosphate group is called nucleoside.

 Nyctinasty is a nastic movement in plants in response to the dark period during night and an example is closing of many leguminous leaves at the onset of darkness.

 Penicillium is derived from a group of fungi belonging to division Ascomycota which are sac like fungi.

Vitamin A helps to improve vision.

 Stomata is present in the lower epidermis to help the dorsi-ventral leaf which faces the sun on the upper side to minimise the rate of transpiration.

The stems and the leaves are seperated from the softer tissues by dew retting.

Plasmodesmata are microscopic channels which traverse the cell walls of plant cells to connect the cytoplasm of the neighbouring cells.

It helps in the growth and development of the body.

 Red algae are highly nutritious and are also used in many food products, so it cannot be poisonous.

Keratinised layer of epidermis is dead and thus osmosis or any other fluid transport mechanism does not work.

Vitamins A and D are fat soluble.