Class 10 ICSE Term1 Biology Specimen 2022

SECTION- I

Question 1 [Biology Specimen Paper Term-I 2022]

Q.1 (a) Name the following by choosing the correct option
A pair of correspondingchromosomes of the same shape and size but one from each parent

1. Autosomes
2. Sex chromosomes
3. Homologous chromosomes
4. Analogous chromosomes

Solution

(b) The factor that does not affect the rate of transpiration

1. Intensity of light
2. Velocity of wind
3. Carbon dioxide
4. Oxygen

Solution

(c) Movement of molecules of a substance from their higher concentration to lower concentration when they are in direct contact.

1. Diffusion
2. Endosmosis
3. Imbibition
4. Active transport

Solution

(d) The complex molecule consisting of a DNA strand and a core of histones

1. Centrosome
2. Nucleotide
3. Nucleosome
4. Chromosome

Solution

(e) The solvent used to dissolve the chlorophyll pigment while testing a leaf for starch

1. Soda lime
2. Carbolic acid
3. Methylated spirit
4. Water

Solution

Question 2 [Biology Specimen Paper Term-I 2022]

Q2 Complete the following statements by choosing the appropriate option for each blank:
(a) During Meiosis _______ daughter cells are formed

1. 4
2. 2
3. 8
4. 6

Solution

(b) Wooden doors swell up during the rainy season due to

1. Osmosis
2. Diffusion
3. Imbibition
4. Transpiration

Solution

(c) The semi permeable membrane in a plant cell is the

1. Cell wall
2. Cell membrane
3. Tonoplast
4. None of the above

Solution

(d) Guttation takes place through

1. Stomata
2. Lenticels
3. Cuticle
4. Hydathodes

Solution

(e) A plant with variegated leaves is

1. Coleus
2. Lotus
3. Peepal
4. Mango

Solution

Question 3 [Biology Specimen Paper Term-I 2022]

Q3 (a) Choose the correct answer from each of the four options given below:
(a) The pressure exerted by the cell contents on the cell wall:

1. Turgor pressure
2. Partial pressure
3. Wall pressure
4. Osmotic pressure

Solution

(b) The cell component visible only during cell division:

1. Chromosome
2. Chromoplast
3. Chromatin
4. Centriole

Solution

(c) Marine fish when placed under tap water bursts, because of:

1. Endosmosis
2. Exosmosis
3. Diffusion
4. Plasmolysis

Solution

(d) The sites of dark reaction of photosynthesis:

1. Grana
2. Fret
3. Stroma
4. Stoma

Solution

(e) The alternative forms of the same gene occupying the same position on homologous chromosomes:

1. Chromatids
2. Alleles
3. Autosomes
4. Centromere

Solution

SECTION- II

Question 4 [Biology Specimen Paper Term-I 2022]

Q4 (a) Explain the following terms:
Osmosis

1. Movement of water from their lower concentration to their higher concentration through a semi permeable membrane
2. Movement of solutes from their lower concentration to their higher concentration through a semi permeable membrane
3. Movement of water from their higher concentration to their lower concentration through a semi permeable membrane
4. Movement of water from their higher concentration to their lower concentration through a freely permeable membrane.

Solution

(b) Photolysis

1. Splitting of water molecules into hydrogen ions and oxygen in the presence of light in grana.
2. Splitting of water molecules into hydrogen ions and oxygen in the presence of light in the Aroma
3. Splitting of water molecules into hydrogen ions and oxygen in the absence of light in grana
4. Splitting of water molecules into hydrogen ions and oxygen in the absent of light in stoma

Solution

(c) Law of segregation

1. The two members of a pair of factors join during the formation of gametes.
2. The two members of a pair of factors separate during the formation of gametes
3. The two chromosomes of a pair of factors separate during the formation of gametes.
4. The two members of a pair of factors separate during the process of germination

Solution

(d) Guttation

1. The loss of water in the form of water droplets from the surface of the leaf
2. The loss of water in the form of water droplets through the stomata
3. The loss of water in the form of water vapour along the leaf margin.
4. The loos of water in the form of water droplets along the leaf margin.

Solution

(e) Active transport

1. Passage of water from its lower to higher concentration through a cell membrane without any expenditure of energy.
2. Passage of ions from its lower to higher concentration through a cell membrane without any expenditure of energy.
3. Passage of water from its lower to higher concentration through a cell membrane using energy from the cell
4. Passage of ions from its lower to higher concentration through a cell membrane using energy from the cell

Solution

Question 5 [Biology Specimen Paper Term-I 2022]

Q5 (a) State the exact location of the following:
Spindle fibres

1. Between the two centrioles
2. Between the two centrosomes
3. Between chromatid and centromere
4. Between two centromeres

Solution

(b) Root hair

1. Extension of the cortex
2. Extension of epithelium
3. Extension of epidermis
4. Extension of endodermis

Solution

(c) Stomata

1. More the upper surface of dorsi ventral leaves
2. More on the lower surface of the dorsi ventral leaves
3. Both upper and lower surface of the dorsi ventral leaves
4. None of the above.

Solution

(d) Thylakoids

1. In the inner membrane of the chloroplast
2. Wall of the chloroplast
3. In the chlorophyll
4. In the stroma of the chloroplast

Solution

(e) Palisade parenchyma

1. Between the upper and lower epidermis of dicot leaves
2. Between the upper epidermis and spongy parenchyma of dicot leaves.
3. Between the lower epidermis and spongy parenchyma of dicot leaves
4. Between the upper and lower epidermis of monocot leaves.

Solution

Question 6 [Biology Specimen Paper Term-I 2022]

Q6 (a) State the function of the following:
Stroma

1. Site of photolysis of photosynthesis
2. Site of photochemical phase of photosynthesis
3. Site of light dependent phase of photosynthesis
4. Site of light independent phase of photosynthesis

Solution

(b) Guard cells

1. Regulate the closing of stomata
2. Regulate the opening and closing of stomata
3. Regulate the opening of stomata
4. Regulate the process of photosynthesis

Solution

(c) Xylem

1. Translocation of food from the leaves to the other parts of the plant
2. Conduction of food.
3. Conduction of water and food
4. Conduction of water and minerals from the root to the other parts of the plant

Solution

(d) Chromosomes

1. The carriers of heredity
2. The controlling centre of the cell
3. The site for various chemical reactions
4. Intracellular digestion

Solution

(e) Hydathode

1. Helps in transpiration
2. Helps in guttation
3. Helps in imbibition
4. Helps in transpiration of water

Solution

SECTION- III

Question 7 [Biology Specimen Paper Term-I 2022]

Q7 Given below is a diagram representing a stage during mitotic cell division. Answer the questions that follow.
(a)Identify the stage

1. Telophase
2. Prophase
3. Metaphase
4. Anaphase

Solution

(b) Label part marked 'X'

1. Centriole
2. Centrosome
3. Centromere
4. Chromatid

Solution

(c) Name the stage that follows the one shown here

1. Interphase
2. Anaphase
3. Telophase
4. Metaphase

Solution

(d) What is the diploid number of chromosomes shown in the diagram?

1. 6
2. 2
3. 4
4. 8

Solution

(e) Mention one important feature of this stage

1. Nucleolus reappears
2. Nuclear membrane reappears
3. Nuclear membrane disappears
4. Chromosomes align on the equator

Solution

Question 8 [Biology Specimen Paper Term-I 2022]

Q8 Observe the diagram given below and answer the questions
(a)Identify the cell organelle

1. Mitochondria
2. Lysosome
3. Ribosome
4. Chloroplast

Solution

(b) Label the parts marked A, B & C

1. 1. Granum 2. Stroma 3. Fret 4. Thylakoid
2. 1. Granum 2. Stroma 3. Fret 4. Thylakoid
3. 1. Granum 2. Stroma 3. Fret 4. Thylakoid

Solution

(c) The unit of light absorbed by chlorophyll is

1. Proton
2. Photon
3. Electron
4. Neutron

Solution