Biology Test
Time: One and half hour Total Marks: 60
Question 1
(a) Name the following: [10]
(i) A condition of united sepals.
(ii) A cell organelle concerned with synthesis of proteins.
(iii) The mode of arrangement of flowers on the axis of the plant.
(iv) A plant in which male and female flowers are present on the same plant.
(v) The process of fruit formation without fertilisation.
(vi) The non-green form of perianth.
(vii) The part of the seed which develops into a shoot.
(viii) Example of fruit in which the inflorescence is eaten up.
(ix) A non-dividing specialized tissue in plants.
(x) An example of fluidic connective tissue.
(b) State differences between each of the following pairs [10]
(i) Self-pollination and cross-pollination (ii) Parenchyma and Collenchyma (iii) Bean and maize grain
(iv) Xylem and phloem (v) Plant cells and animal cells.
Question 2 [10]
(i) What is the fate of floral part after fertilization?
(ii) Why is the fertilisation process in Angiosperms known as double fertilization?
(iii) What is the fate of floral part after fertilization?
(iv) Why nature favour cross-pollination?
(v) Why does a fresh seed from a plant fail to germinate?
Question 3 [10]
(a) The given diagram refers to an apparatus which is used to demonstrate a physiological process.
(i) Why is potassium hydroxide solution kept in test tube X and Y? [6]
(ii) Why are boiled peas soaked in disinfectant kept in test tube Y?
(iii) Why has the coloured water risen in tubing 1?
(iv) Name the biological process which causes the coloured water to rise in tubing 1.
(v) Define the biological process explained through the given experiment.
(b) Name and explain the germination that takes place in the pea seed. [4]
1|Page Dr. Subrata Kundu/ICSE/06.08.2018
Question 4
(a) Study the diagram given below and answer the questions that follow: [5]
(i) Name the structure shown and label its parts 1 and 2.
(ii) Is the given structure albuminous or non-albuminous?
Give reason for your answer.
(iii) Name the protective coverings of part labelled 3 & 4.
(iv) Name the protein rich layer of endosperm.
(v) Why is the given structure called a grain?
(b) Study the given figure and answer the questions based on them. [5]
The given figure shows a type of tissue.
1. Name the tissue.
2. Label parts 1 and 2.
3. State the characteristics of this tissue.
Question 5 [10]
(a) Mention the differences between: 4
i) monocot and dicot seeds.
ii) hypogeal and epigeal germination.
(b) The given figure shows the L.S. of a flower: 3
(i) Name the flower.
(ii) Label parts 1-4.
3
(c) Why naked DNA is present in mitochondria?
(d) Why polar molecule cannot pass through plasma membrane?
2|Page Dr. Subrata Kundu/ICSE/06.08.2018
