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Theories of Evolution: Jean-Baptiste de Lamarck

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Questions and Answers

What is the main factor used to determine the evolutionary relationship between two species?

The number of offspring produced by the species
The similarity in amino acid sequences between the species (correct)
The number of chromosomes in the species
The physical appearance of the species

Which of Lamarck's theories is the idea that organisms evolve and alter their body parts or structure according to their needs?

Theory of Needs (correct)
Theory of Use and Disuse
Theory of Natural Selection
Theory of Acquired/Inherited Characteristics

Which of the following is NOT a factor that can cause a decrease in population growth?

Immigration
Death
Birth (correct)
Emigration

Which of the following best describes the concept of 'resistance' in terms of ecosystem stability?

The ability of an ecosystem to maintain its structure and function despite changes (D) Signup and view all the answers

What is the relationship between biodiversity and ecosystem stability according to the text?

The more diverse an ecosystem is, the more stable it is (B) Signup and view all the answers

Which of Lamarck's theories is the idea that body parts used often are developed further, while those not often used will disappear?

Theory of Use and Disuse (A) Signup and view all the answers

What is the primary function of the ovaries?

To produce estrogen and progesterone (D) Signup and view all the answers

What is the role of the fallopian tubes in the female reproductive system?

To transport the ovum from the ovary to the uterus (D) Signup and view all the answers

What is the purpose of the feedback mechanism in the hormonal regulation of the reproductive system?

To maintain hormone levels within desirable limits (A) Signup and view all the answers

During which phase of the menstrual cycle does the uterine lining shed?

Menstrual phase (A) Signup and view all the answers

What is the role of the nervous system in the coordination of the reproductive system?

To work together with the endocrine system to facilitate reproduction (A) Signup and view all the answers

What is the primary function of the $ ext{GnRH}$ (Gonadotrophin-releasing hormone)?

To regulate the levels of $ ext{FSH}$ and $ ext{LH}$ hormones (A) Signup and view all the answers

What is the main purpose of the male reproductive system?

To produce and deliver sperm (B) Signup and view all the answers

Which part of the male reproductive system secretes a sugar-rich fluid for sperm cells to use as energy?

Seminal vesicle (D) Signup and view all the answers

Which part of the male reproductive system creates an alkaline/basic fluid to neutralize the acidic environment of the female reproductive system?

Prostate gland (B) Signup and view all the answers

What is the function of the bulbourethral gland in the male reproductive system?

To create an alkaline/basic fluid to neutralize traces of urine in the urethra (D) Signup and view all the answers

Which part of the male reproductive system carries both urine and semen?

Urethra (D) Signup and view all the answers

Why is the scrotum located outside the body?

To allow for a cooler temperature than the internal body temperature for spermatogenesis to occur (B) Signup and view all the answers

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