Observe the patterns of match sticks and fill in the chart given

Let's observe the patterns fo match sticks and fill in the schart given below.

Write the algebraic expression for the number of match sticks required in the arrangements of Sabina and Sayan.

Given below is an incomplete flow chart showing influence of hormones on gametogenesis in males. Observe the flow chart carefully and fill in the blanks A,B,C and D.

Haemophilia is a sex linked recessive disorder of humans. The pedigree chart given below shows the inheritance of Haemophilia in one family. Study the pattern of inheritance and answer the questions given. (a) Give all the possible genotypes of the members 4, 5 and 6 in the pedigree chart. (b) A blood test shows that the individual 14 is a carrier of haemophilia. The member numbered 15 has recently married the member numbered 14. What is the probability that their first child will be a haemophilic male ? Show with the help of Punnett square.

Study the flow chart given below . Name the hormones involved at each stage and explain their functions .

match the types of defect given in column I with the statement given in column II.

Name the metals and non-mmetals present in the compounds we use in our day to day life? Tooth paste, Gun powder of match stick, Chemical Fertiliser, Stainless steel, Cement Photographic film.

Different types of excretory structures and animals are given below. Match them appro- priately and mark the correct answer from among those given below

Identify the hormones a, b and c that are labelled in the given flow chart

Study the given pedigree chart showing the pattern of blood group inheritance in a family (a) Given the genotype of the following: (i)Parents (ii) The individual 'X' in second generation (b) State the possible blood groups of the individual 'Y' in third generation (c) How does the inheritance of this blood group explain codominance?