Biology - NCERT Solutions - GeniusJnr

Evaluate (i) (ii)

During the medical check-up of 35 students of a class, their weights were recorded as follows:

Draw a less than type ogive for the given data. Hence obtain the median weight from the graph verify the result by using the formula.

In any triangle ABC, if the angle bisector of ∠A and perpendicular bisector of BC intersect, prove that they intersect on the circum circle of the triangle ABC.

Find the value of m for which 5^m ÷5⁻³ = 5⁵.

Assertion and Reason

Directions: The following question has two statements, Assertion and Reason.

Answer the question by choosing any one of the following four responses.

Assertion: Unfertilized ovum generally fails to develop into adult organism.

Reason: Parthenogenesis refers to development of unfertilized ovum into a fully formed haploid organism.

In which of the following organisms, isogametes are observed?

Which of the following statements is true about today’s world?

(a) Monarchy as a form of government has vanished.

(b) The relationship between different countries has become more democratic than ever before.

(c) In more and more countries rulers are being elected by the people. 

(d) There are no more military dictators in the world.

Identify the challenges to democracy in the following descriptions. Also suggest policy/institutional mechanism to deepen democracy in the given situations:

• Following a High Court directive a temple in Orissa that had separate entry doors for dalits and non-dalits allowed entry for all from the same door.

• A large number of farmers are committing suicide in different states of India.

• Following allegation of killing of three civilians in Gandwara in a fake encounter by Jammu and Kashmir police, an enquiry has been ordered.

Read the passage below:

Nannu is a daily wage earner. He lives in Welcome Mazdoor Colony, a slum habitation in East Delhi. He lost his ration card and applied for a duplicate one in January 2004. He made several rounds to the local Food & Civil Supplies office for the next three months. But the clerks and officials would not even look at him, leave alone do his job or bother to tell him the status of his application. Ultimately, he filed an application under the Right to Information Act asking for the daily progress made on his application, names of the officials, who were supposed to act on his application and what action would be taken against these officials for their inaction. Within a week of filing application under the Right to Information Act, he was visited by an inspector from the Food Department, who informed him that the card had been made and he could collect it from the office. When Nannu went to collect his card next day, he was given a very warm treatment by the Food & Supply Officer (FSO), who is the head of a Circle. The FSO offered him tea and requested him to withdraw his application under the Right to Information, since his work had already been done.

What does Nannu’s example show? What impact did Nannu’s action have on officials? Ask your parents their experiences when they approach government officials to attend to their problems.

Which vegetative structure is involved in the process of reproduction in ginger?

कवि पुष्पों की तंद्रा और आलस्य दूर हटाने के लिए क्या करना चाहता है?

(क) चार महीने के होते-होते ये नष्ट हो जाते हैं-

• इस वाक्य को ध्यान से पढ़िए। इस वाक्य में 'होते-होते' के प्रयोग से यह बताया गया है कि चार महीने से पूर्व ही ये नष्ट हो जाते हैं। इस तरह के पाँच वाक्य बनाइए जिनमें इन शब्दों का प्रयोग हो-

(ख) इन प्रयोगों को पढ़िए-

इन वाक्यों में 'होते-होते' की तरह 'किनारे-किनारे' और 'दूर-दूर' शब्द दोहराए गए हैं। पर हर वाक्य में अर्थ भिन्न है। किनारे-किनारे का अर्थ है- किनारे से लगा हुआ और दूर-दूर का-बहुत दूर तक।

आप भी निम्नलिखित शब्दों का प्रयोग करते हुए वाक्य बनाइए और उनके अर्थ लिखिए -