Chapter 6 Molecular Basis of Inheritance
Chapter 6 Molecular Basis of Inheritance Question 1. Group the following as nitrogenous bases and nucleosides:Adenine, cytidine, thymine, guanosine, uracil, and cytosine. Solution: Adenine, Guanosine, Thymine, Uracil, and Cytosine are nitrogenous bases. (Adenine and Guanosine → Purine, Thymine, Uracil and Cytosine → Pyrimidine) Cytidine is a nucleoside. Question 2. If a double-stranded DNA has 20 […]
Chapter 5 Principles of Inheritance and Variation
Chapter 5 Principles of Inheritance and Variation Question 1. Mention the advantages of selecting pea plant for experiment by Mendel. Solution: The plant shows clear-cut contrasting characters. Hybrids are perfectly fertile. Genes for the seven contrasting characters are located on seven separate chromosomes. Easy to cultivate. The floral structure is suitable for artificial pollination. Short […]
Chapter 4 Reproductive Health
Chapter 4 Reproductive Health Question 1. What do you think is the significance of reproductive health in a society? Solution: Significance of reproductive health in society are: Control over the transmission of STDs. Less death due to reproduction-related diseases like-AIDS, cancer of the reproductive tract. Control in a population explosion. Not only the reproductive health […]
Chapter 3 Human Reproduction
Chapter 3 Human Reproduction Question 1. Fill in the blanks. Humans reproduce___(asexually/ sexually). Humans are ___(oviparous/ viviparous/ ovoviviparous). Fertilisation is___in humans (external/internal). Male and female gametes are___ (diploid/haploid). Zygote is___(diploid/haploid). The process of release of ovum from a mature follicle is called___ Ovulation is induced by a hormone called ___ The fusion of male and […]
Chapter 2 Sexual Reproduction in Flowering Plants
Chapter 2 Sexual Reproduction in Flowering Plants Question 1. Name the parts of an angiosperm flower in which development of male and female gametophyte take place. Solution: Inside the anther, the cells of microsporangia develop as male gamete. Inside the ovary megasporangial cells develop as female gametes. Question 2. Differentiate between microsporogenesis and megasporogenesis. Which […]
Chapter 1 Reproduction in Organisms
Chapter 1 Reproduction in Organisms Chapter 1 – Reproduction In Organism – covers different exercises. The questions in each exercise come with the answer and a detailed, step-by-step solution for better understanding by the student. This will prove to be most helpful to students in their home assignments and practice. The topics and sub-topics included in the chapter […]