Biological classification is a dynamic and ever evolving phenomenon which keeps changing with our understanding of life forms. Justify the statement taking any two examples.

An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target .Based on this informaion, fill up the gaps in the following statements using the following terms. Muscular,contact,non -contact,gravity, friction,shape, attraction The type of force responsible for a change in the state of motion of the arrow is an example of a............. force .

Consider the following statements: (i) If any two rows or coluns of a determinant are identical, then the value of the determinatn is zero. (ii) If the corresponding rows and columns of a determinant are interchanged, then the value of the determinant does not change. (iii) If any two rows (or columns) of a determinant are interchanged, then the value of the determinant changes in sign. Which of these are correct?

ASSERTION TYPE QUESTIONS : These questions consist of two statements each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is correct explanation of Assertion B. If both Assertion and Reason are true but Reasou is not correct explanation of Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion : Seeded plants are highly evolved. Reason: In spermatophyta, seeds are formed.

An archer stretches her bow while taking aim at the target. She then releases the arrow , which begins to move towards the target. Based on this information fill up the gaps in the following statements using the following terms. Muscular, contact, non-contact, gravity, friction, shape, attraction. The type of force responsible for a change in the state of motion of the arrow is an example of a ....... force.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: After drinking, alcohol is changed to glucose in liver. Reason: Liver cells are able to form glucose from alcohol by reverse fermentation.

These questions consist of two statement each, printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses. A. If both Assertion and Reason are true and Reason is a correct explanation of the Assertion. B. If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion. C. If Assertion is true but Reason is false. D. If both Assertion and Reason are false. Assertion: Algae are characterized by multicellular sex organs in which every cell forms the gamete. Reason: Sexual reproduction in algae is only of oogamous type.

Give two examples from our daily life to show that chemical changes do take place in our daily life

These questions consist of two statements each,printed as Assertion and Reason.While asnwering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:Bacilius polymxa,clostridium are examples of anaerobic bacteria. Reason:These bacteria show the phenomenon of symbiotic nitrogen fixation.

These questions consist of two statements each,printed as Assertion and Reason.While asnwering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:Minerals do not form a component of biologically active compounds Reason:Some persons suffer from anaemia due to iron deficiency.