इयत्ता ५ वी इतिहास पाठ-४

Explanation
The given question is in Marathi language and it asks about the first scientist to propose the concept of evolution. The correct answer is "चार्ल्स डार्विन" (Charles Darwin). Charles Darwin is widely known for his theory of evolution by natural selection, which he proposed in his book "On the Origin of Species" in 1859. He provided evidence to support the idea that species evolve over time through a process of natural selection, where individuals with favorable traits are more likely to survive and reproduce.

Explanation
सस्तन refers to mammals in Hindi. The given statement states that the highest level of evolution among the vertebrates is seen in mammals. Therefore, the correct answer is सस्तन.

Explanation
The correct answer is उभयचर. This is because उभयचर refers to organisms that can survive both in water and on land.

Explanation
The correct answer is "अपृष्ठवंशीय सजीव". This is because the question is asking for the type of organism that does not have a cell nucleus. "अपृष्ठवंशीय सजीव" refers to prokaryotic organisms, which are characterized by the absence of a true nucleus. Option 1, "म्हणजे पाठीचा कणा नसलेले सजीव होय", is not a valid answer as it does not provide any information about the type of organism. Option 2, "पृष्ठवंशीय सजीव", refers to eukaryotic organisms, which have a true nucleus. Options 3 and 4 are not mentioned in the question, so we cannot determine if they are correct or not.

Explanation
The correct answer is "पृष्ठवंशीय सजीव". In the given statement, it is mentioned that there are two main types of organisms that evolve from the surface. The term "पृष्ठवंशीय" refers to surface-dwelling organisms, which supports the given statement. On the other hand, "अपृष्ठवंशीय" refers to organisms that evolve from beneath the surface, which is not mentioned in the given statement. Therefore, the correct answer is "पृष्ठवंशीय सजीव".

Explanation
The given statement is in Marathi language, which translates to "The concept of revolution was first introduced by scientist Willard Libby." The correct answer is False because the concept of revolution was not introduced by Willard Libby.

Explanation
The given statement in Hindi states that the beginning of creation of the universe started from a living organism. The correct answer "True" suggests that the statement is indeed true, implying that according to the given information, the creation of the universe began from a living organism.

Explanation
This statement is true because the given sentence states that the animal "बदकचोच्या" lays eggs even though it is a mammal. This contradicts the general characteristics of mammals, which give birth to live young instead of laying eggs. Therefore, the correct answer is true.

Explanation
The given statement in Hindi translates to "The cow is a mammal." The correct answer is False because the statement is incorrect. Cows are not mammals, they are actually mammals.

Explanation
The given statement in the question states that "गांडूळ हा अपृष्ठवंशीय सजीव आहे" which translates to "Gandul is a surface-dwelling organism". The word "हा" indicates that the statement is referring to a singular subject, and "अपृष्ठवंशीय" means surface-dwelling. Therefore, the correct answer is True, indicating that Gandul is indeed a surface-dwelling organism.