Draw a scientific diagram of the vertical section of a human eyeball and label the following parts: [3+2=5] (a) Choroid (b) Lens (c) Cornea (d) Vitreous humour OR Draw a scientific diagram of the anaphase stage of mitotic cell division in an animal cell and label the following parts- [3+2=5] (a) Centromere (b) Daughter chromosome (c) Polar region (d) Spindle fibre

Cornea, Choroid, Lens, Aqueous humour, Iris, Vitreous humour — how many of these are refractory media of the eyeball? (a) 3 (b) 4 (c) 5 (d) 6

Which of the following is not a structural feature of an Axon? (a) Node of Ranvier (b) Myelin sheath (c) Nissl granule (d) Schwann cell

Write the names of two structural parts of axon.

Name any two structural parts of Neurone

Explain the causes of Myopia and Hyperopia

Explain the following two terms: Ganglia and Synapse.

The two reflex actions, namely sneezing and coughing help in avoiding danger – justify the statement.

Mention one role each of hypothalamus and medulla oblongata in the 24 hours daily life of a person

Blind spot is the part of the eye devoid of light sensitive cells formed at the junction of optic nerve and retina.

Accommodation is the ability of the retina of the eye to adjust the focal length as needed.

Choose the odd one and write it: Olfactory nerve, Vagus nerve, Optic nerve, Auditory nerve