Mammals Dicot plants Review Exercise Choose the correct option. 1. Which of the following pairs of organisms belong to the same kingdom​

Answer:

Genetic variation occurs as alleles in gametes are separated and randomly united upon fertilization. The genetic recombination of genes also occurs during crossing over or the swapping of gene segments in homologous chromosomes during meiosis. Variations happen due to inaccuracies in DNA copying.

Concept Introduction:-

The differentiate in DNA between individuals or communities is known as genetic variation.

Explanation:-

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The variations in organisms can arise due to various reasons. Most common of these are the variations caused due to sexual reproduction and variations caused due to mutations.

In sexual reproduction, the gametes are formed by meiosis, during which crossing over of chromosomes occurs, giving opportunity for new combination of genes. Then, the fusion of these haploid gametes takes place, which further leads to combination of DNA belonging to two different organisms, and, thus, results in varition in the newly formed individual. Some variations may also occur due to random mutations in the genome of an individual. If these mutations are beneficial, they may get inherited to the next generations also, and, thus, lead to variations.

Most of the times, variations developed, are helpful for the survival of species. The new variations, if associated with more chances of adaptations with changing environment, are selected by the nature and thus give better chances of survival to the species.

Final Answer:-

The correct answer is the most common of these are the variations caused due to sexual reproduction and variations caused due to mutations.

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Answer:

98000liter

Step-by-step explanation:

The ratio of alcohol to water in mixture is 7:25

Given - Cost price, selling price and profit

Find - Ratio of alcohol to water

Solution - Firstly finding the price of the mixture containing alcohol and water.

Cost price = Selling price×100/(100 + profit percentage)

Converting profit = (66×3+2)/3

Converting profit = 66.67%

Keep the values in formula to find the value of cost price

Cost price = 1250 × 100/(100 + 66.67)

Cost price = Rs. 750

Using alligation method -

1250 - 0 : 1250 - 900

Performing subtraction

350 : 0

On further division, we get -

25 : 7

Hence, the ratio of alcohol to water mixture is 7:25.

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Answer:

As a leader, Rizal was transformational, charismatic, visionary, and most importantly, incorruptible. He displayed a kind of leadership that was not motivated by personal interest but the willingness to sacrifice oneself for the good of the majority which he described in his novels as the national sentiment.

Explanation:

Answer. ऊपर दिए गए विकल्पों में जीवधारी प्राकृतिक संसाधन (Natural Resources) नहीं है

Explanation:

• व्यक्तिगत संसाधन वैसे संसाधन, जो व्यक्तियों के निजी स्वामित्व में हों, व्यक्तिगत संसाधन कहलाते हैं। जैसे घर, व्यक्तिगत तालाब, व्यक्तिगत निजी चारागाह, व्यक्तिगत कुँए आदि। तत्वों या वस्तुओं के निर्माण में सहायक कारकों के आधार पर संसाधनों को दो वर्गों में विभाजित करते हैं-
• प्राकृतिक संसाधन
• मानव संसाधन
• संसाधन (resource) एक ऐसा स्रोत है जिसका उपयोग मनुष्य अपने इच्छाओं की पूर्ति के लिए के लिए करता है।
• कोई वस्तु प्रकृति में हो सकता है हमेशा से मौज़ूद रही हो लेकिन वह संसाधन नहीं कहलाती है, जब तक की मनुष्यों का उसमें हस्तक्षेप ना हो। हमारे पर्यावरण में उपलब्ध हर वह वस्तु संसाधन कहलाती है
• जिसका इस्तेमाल हम अपनी आवश्यकताओं की पूर्ति के लिये कर सकते हैं, जिसे बनाने के लिये हमारे पास प्रौद्योगिकी है और जिसका इस्तेमाल सांस्कृतिक रूप से मान्य है। प्रकृति का कोई भी तत्व तभी संसाधन बनता है जब वह मानवीय सेवा करता है। इस संदर्भ में 1933 में जिम्मरमैन ने यह तर्क दिया था कि, ‘अपने आप में न तो पर्यावरण, और न ही उसके अंग, संसाधन हैं,
• जब तक वह मानवीय आवश्यकताओं को संतुष्ट करने में सक्षम न हो।