What is the function of the ribosome?

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

On the basis of the relationship in the first related pair of words, write a suitable word in the gap of the second pair: Mitosis : Equational division :: ____ : Reduction division

____ cell division maintains the number of chromosomes constant in a species.

Which of the following is correct regarding the Chemical Composition of nucleotide? (a) 5 - C Sugar + Phosphoric Acid = Nucleotide (b) Nitrogenous base + Phosphoric Acid = Nucleotide (c) 5 - C Sugar + Nitrogenous base = Nucleotide (d) 5 - C Sugar + Nitrogenous base + Phosphoric Acid = Nucleotide

Write one function each of chromoplast and Golgi apparatus.

Write one function each of ribosome and lysosome.

Explain the process of segmentation with the help of a proper example of plants.

Mention any two phenomena during G1 phase of Interphase.

Write two features of Amitotic cell division.

In DNA, which of the following base pairs is correct? (a) A—T (b) A—T (c) G = C (d) G—C

Compare the steps of mitosis in plant cells and animal cells and select which are correct: Mitosis in plant cell Mitosis in animal cell I. Spindle is formed from the cytoplasm. I. Spindle is formed from centrioles or asters. II. Cytokinesis occurs by cell plate formation. II. Cytokinesis occurs by cleavage furrow formation. III. Centrosomes are not involved. III. Centrosomes form from centrioles and are involved in mitosis. IV. Division of cytoplasm occurs through the formation of a cell plate. IV. Division of cytoplasm occurs through furrow formation. Which are correct? (a) I, IV (b) II, IV (c) II, III (d) III, IV