Are you looking for Life Science Question Papers for the West Bengal Board of Secondary Education 2024? Here is the Life Science Question Paper for Class 10, 2024 (Madhyamik). This resource aims to assist you in comprehending the question pattern for the upcoming examinations. It provides Life Science Question Papers for the year 2024. The primary purpose of sharing this expected Question Paper on the blog is to aid Madhyamik students in understanding the question structure. Feel free to download the PDF attachment and print it out. Best of luck!
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1. Write the answers in complete sentence by choosing the correct
answer from each question with respective serial number:- 1x15=15
1.1 Select the correct pair from the following and write it –
(a) Hypothalamus - memory (b) Ventricles of brain - Corpus callosum (c) Medulla oblongata - sleep and walking centre (d) CSF - Neurocoel
1.2 Find out the correct sequence from the following –
(a) Pituitary à TSH à Thyroid à Thyroxine
(b) Pituitary à CRH à Adrenal à Adrenaline
(c) TRH à TSH à Pituitary à Thyroid
(d) ACTH à Pituitary à Adrenal à Adrenaline
1.3 The petals of sunflower open up during intense sunlight and close during sunset. Identify the type of movement found in the plant –
(a) Photonasty (b) Thermonasty
(c) Hydrotaxis (d) Thermotaxis
1.4 Select the post mitotic phase from following –
(a) G1 (b) G2 (c) S (d) M
1.5 Determine the correct pair –
(a) grafting - lichen (b) binary fission - amoeba (c) sporulation - hydra (d) zoospore - mucor
1.6 Which part of the flower grows into seed?
(a) anther (b) sepals (c) ovary (d) ovule
1.7 Calculate the ratio of the tall and dwarf offspring formed by
cross between Tt x tt.
(a) 1:2 (b) 1:1 (c) 1:2:1 (d) 9:3:3:1
1.8. Assess how many types of genetically different daughter cells are produced in the F2 generation of Mendelian dihybrid cross –
(a)
4 (b) 6 (c) 9 (d) 16
1.9 Select which of the following haemophilia disease is linked to
–
(a) Y-linked (b) non-genetic (c) Autosomal (d) X-linked
1.10 Which one of the following statement is correct regarding
sexual reproduction.
(a) Haploid gamete formation is essential in sexual reproduction
(b) Sexual reproduction depends only on mitosis
(c) In sexual reproduction, offsprings could be produced from a
single parental organism
(d) The offsprings produced in sexual reproduction are genetically
identical with parental organism
1.11 The tentacles on leaves of an insectivorous plant, called
sundew bend to trap the insect as soon as they come in contact with the insect
body. This is
(a) Seismonasty (b) Thermonasty (c) Photonasty (d)
Chemonasty
1.12 In case of women, the Follicle Stimulating Hormone stimulates
the Graafian Follicle of the Ovary to secrete the hormone, is
(a) TSH (b) ADH (c) Oestrogen (d) ACTH
1.13 Which one of the following is the correct reflex arc-
(a) Receptor → Effector→ Efferent
nerve →
Nerve Centre→Afferent
nerve
(b) Nerve Centre → Receptor →
Afferent nerve - Effector → Efferent nerve
(c) Efferent nerve →Receptor →
Afferent nerve Nerve Centre → Effector
(d) Receptor→Afferent
nerve→Nerve
Centre →
Efferent nerve →
Effector
1.14 In which stage of mitosis cell division,
the nuclear membrane and nucleolus are seen to disappear
(a) Anaphase (b) Prophase
(c) Metaphase (d) Telophase
1.15 Which of the following is not a structural component of DNA
(a) Deoxyribose sugar (b) Uracil base (c) Thymine base (d) Phosphoric Acid
2. Answer any 21 questions out of 26 questions given below as instructed: 1x21=21
Fill in the blanks with proper words in the following sentences.
(any five) : 1x5=5
2.1 The part of eyeball controlling the diameter of pupil is __________.
2.2 Meiosis occurs in _________ cells in ferns to produce spores.
2.3 Father’s ________ allosome combined with anyone of the mother's allosomes to give rise a male child.
2.4 Due to deficiency of lodine, the synthesis of _____ hormone is hampered.
2.5 During embryonic development and growth in
verterbrates____ cell division takes place.
2.5 The different _____ of Pea Plant may show same Phenotype.
Decide whether the following statements are true or false. (any five): 1x5=5
2.7 The covering of brain and spinal cord is meninges.
2.8 Thymine is not found in RNA.
2.9 All dwarf and tall pea plants are always pure in character.
2.10 Hypothalamus helps to maintain body balance in human.
2.11 In DNA, Adenine is linked with Guanine by hydrogen bonds.
2.12 Insulin is secreted from the alpha cells of islets of
Langerhans.
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