CBSE Class 12 Biology Reproductive Health Worksheet
Reproductive Health MCQ Questions with Answers Class 12 Biology Question. Which of the following is traditional method of contraception? (a) Implantation (b) Lactational amenorrhoea (c) Condoms (d) Sterilization Answer: B Question. Tying up or removing a small…
CBSE Class 12 Biology Reproduction In Organisms Worksheet
Reproduction is a biological process of formation of new offsprings from the pre-existing organism.Reproduction becomes a vital process without which species cannot survive for long It ensures continuity of species generation after generations as older…
CBSE Class 12 Biology Reproduction In Human Beings Worksheet
Question. Which of the following hormones is not secreted by human placenta? (a) hCG (b) Estrogens (c) Progesterone (d) LH Answer: D Question. Immediately after ovulation, the mammalian egg is covered by a membrane known as (a) chorion (b) zona pellucida (c) corona radiata (…
CBSE Class 12 Biology Reproduction In Flowering Plants Worksheet Set C
Important Questions for NCERT Class 12 Biology Sexual Reproduction in Flowering Plants Question. Ovules generally differentiate a single megaspore mother cell in the (a) Micropylar region (b) Chalazal region (c) Both 1 & 2 (d) Integument region Answer : A…
CBSE Class 12 Biology Reproduction In Flowering Plants Worksheet Set B
Important Questions for NCERT Class 12 Biology Sexual Reproduction in Flowering Plants Question. Polar nuclei are situated in the central cell (a) Below the egg apparatus (b) Above the egg apparatus (c) Below the antipodals (d) All of the above…
CBSE Class 12 Biology Reproduction In Flowering Plants Worksheet Set A
Important Questions for NCERT Class 12 Biology Sexual Reproduction in Flowering Plants Question. During embryo sac formation how many nuclei out of eight nucleus go through cytokinesis or wall formation? (a) All eight (b) Two (c) Six (d) Four Answer. C…
CBSE Class 12 Biology Principles Of Inheritance And Variation Worksheet Set D
QUESTIONS 1.Name one autosomal dominant and one autosomal recessive 2..Name one autosomal dominant and one autosomal recessive Mendelian disorder in humans. 3.Write the genotype of i) an individual who is carrier of sickle cell anaemia gene but apparently…
CBSE Class 12 Biology Principles Of Inheritance And Variation Worksheet Set C
a) Is the trait recessive or dominant? b) Is the trait sex- linked or autosomal? c) Give the genotypes of the parents in generation I and of their third and fourth child in generation II. 2 Recently a girl baby has been reported to suffer from haemophilia. How is it possible…
CBSE Class 12 Biology Principles Of Inheritance And Variation Worksheet Set B
Principles of Inheritance and Variation MCQ Questions with Answers Class 12 Biology Question. Graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross, is known as (a) Mendel square (b)…
CBSE Class 12 Biology Organisms And Populations Worksheet
Important Questions for NCERT Class 12 Biology Organisms and Populations Question. At organismic level which type of ecology exists (a) Synecology (b) Physiological ecology (c) Behavioural ecology (d) Systematic ecology Answer : B Question. Which of the following match…
CBSE Class 12 Biology Molecular Basis Of Inheritance Worksheet Set C
Important Questions for NCERT Class 12 Biology Molecular Basis of Inheritance Question. During replication large amount of energy get exhausted. The source of this energy is (a) Deoxy ribonucleotide triphosphophate (b)…
CBSE Class 12 Biology Molecular Basis Of Inheritance Worksheet Set B
Important Questions for NCERT Class 12 Biology Molecular Basis of Inheritance Question. A m-RNA also has some additional sequences that are not translated called UTR. The function of UTR is (a) Charging of t-RNA (b) Formation of peptide bond (c) Helps in efficient…
CBSE Class 12 Biology Molecular Basis Of Inheritance Worksheet Set A
Question. Which one of the following steps in transcription is catalysed by RNA polymerase? (a) Initiation (b) Elongation (c) Termination (d) All of these Answer : B Question. In aDNAstrand the nucleotides are linked together by (a) glycosidic bonds (b)…
CBSE Class 12 Biology Microbes In Human Welfare Worksheet Set B
Important Questions for NCERT Class 12 Biology Microbes in Human Welfare Question. Which of the following is not an advantage of mycorrhiza (a) Phosphorus absorption (b) Resistance to root borne pathogens (c) Nitrogen fixation (d) Tolerance to salinity and draught…
CBSE Class 12 Biology Microbes In Human Welfare Worksheet Set A
Important Questions for NCERT Class 12 Biology Microbes in Human Welfare Question. Nutritionally curd is more suitable then milk. Which of the following reason not supporting to this view (a) It increasing vitamin B12 (b) It checks disease causing…