Complete the following sentences by choosing the appropriate words from the brackets:
(Inheritance , sexual reproduction, asexual reproduction, chromosome, DNA, gene)
Organisms produced by ………show minor variations.

Complete the following sentences by choosing the appropriate words from the brackets: (Inheritance , sexual reproduction, asexual reproduction, chromosome, DNA, gene) Organisms produced through…..show major variations.

Complete the following sentences by choosing the appropriate words from the brackets: (Inheritance , sexual reproduction, asexual reproduction, chromosome, DNA, gene) Chromosomes are mainly made up of ……

Complete the following sentences by choosing the appropriate words from the brackets: (Inheritance , sexual reproduction, asexual reproduction, chromosome, DNA, gene) The component which is in the nuclei of cells and carries the hereditary charcterstics is called....

Complete the following sentences by choosing the appropriate words from the brackets: (Inheritance , sexual reproduction, asexual reproduction, chromosome, DNA, gene) Hereditary characters are transferred from parents to off spring by ……here they are said to be structural and functional units of heredity.

complete the paragraph by choosing the appropriate words given in the brackets : (external, inhalation, alveolar, breathing, resptration, exhalation) Release of energy from the assimilated food is called .......... Inhalation and exhalation is called ................. When.............. is done, air enters the lungs. The oxygen from this air enters the blood while carbon dioxide from the blood exits from the blood, Through .................. CO_2 is given out. This gaseous exchange occurs through ......... membrane. This is called................ respiration. The RBCs carry oxygen to every cell.

Complete the paragraph by choosing the appropriate words given in the , bracket : (Lungs. heart, carcinogenic, nervous, intoxicating, hazardous, addictions, peer-group) The children fall into the trap of .......... either due to ............. pressure or due to false symbol of high standard living. Sometimes they try to imitate their elders. The addictive substances are............ and they cause long term effects. Some are temporarily ............ substances obtained from the plants. While some of the chemical ingredients in them can permanently damage the human ............ system, muscular system, ............, etc. Some tobacco like substances are ........... in action especially on the mouth and.............

State whether the following statements are true or false. Correct the false statement: Offsprings produced through asexual reproduction show greater variations as compared to those produced through sexual reproduction.

Complete the paragraph by choosing the appropriate words given in the brackets : (conserving, pledge. biodiversity, judicious, wildlife, diversity, destruction) l am aware that the............on the Earth is for the existence of me, my family and the entire mankind. I am aware about the responsibility of ........... and protecting the rich diversity. I am aware about the fast-declining number of ................., plants and animals. | am accepting the responsibility of .............. use of natural resources and management of ................... I. ................ for adopting the following principles for happy and satisfactory life of all organisms on the Earth.

comptete the paragraph by choosing he appropriate words given in the bracket : (degenerated, red bone marrow, adipose connective tissue, blastocyst, umbilical cord, Differentiation) ...... Of stem cells form can form various issues in the body. Stem cells are present in the .......... by which the foetus is joined to the uterus of the mother. Stem cells are also present in the ........ Stage of embryonic development. Stem cells are present in............and............ of adult human beings. It has become possible to produce different types of tissues and the ............ part of any organ with the help of these stem cells.

Complete the paragraph Fill in the blanks by selecting the correct word from the bracket and complete the given paragraph. (adenine, phosphoric acid, centromeres, cytosine, nucleotides, ribonucleic acid, guanine, thymine) In 1953, Watson and Crick produced a model of the DNA molecule. As per this model, each strand in the molecule of DNA is made up of many small molecules known as _________. There are four types of nitrogenous bases adenine, guanine, cytosine and thymine_________and __________are called as ‘purines’ while _________and_________ are called ‘pyrimidines’. In the structure of the nucleotide, a molecule of a nitrogenous base and _________are each joined to a molecule of sugar.