Question

Which of the following statements is true about external and internal fertilization?

A. All animals that lay eggs use internal fertilization.   B. Internal fertilization doesn't require sexual intercourse.   C. External fertilization doesn't require sexual intercourse.   D. All animals that lay eggs use external fertilization.

Animals have a variety of adaptations, including trachea and gills, which allow this key process to occur. Which provides the molecules necessary for cellular respiration and efficient ATP synthesis?

A. Digestion   B. Waste elimination   C. Nutrient absorption   D. Gas exchange

Most animals and plants reproduce sexually. This means that DNA is passed down to new organisms from two parental organisms. Which of the following is a key advantage of sexual reproduction?

A. The receipt of the strongest genes from both parents for survival   B. The elimination of genetic mutations from a parent organism   C. Increased genetic diversity for changing environments   D. The creation of new genes to improve survival

Which of the statements is true of saltwater and freshwater animal waste management systems?

A. No saltwater or freshwater animals urinate.   B. Saltwater-based animals must have a mechanism to prevent water from trying to diffuse into their bodies   C. Both saltwater and freshwater animals don't need to eliminate waste, as it diffuses out of their bodies naturally   D. Freshwater-based animals must have mechanisms to prevent water from trying to diffuse into their bodies.

Most animals and plants reproduce sexually. This means that DNA is passed down to new organisms from two parental organisms. Which of the following is a key advantage of sexual reproduction?

A. The receipt of the strongest genes from both parents for survival   B. The elimination of genetic mutations from a parent organism   C. Increased genetic diversity for changing environments   D. The creation of new genes to improve survival

Which of the following is true of innate behaviors that are described as instincts?

A. Instincts are sudden, situational behaviors.   B. Instincts aren't governed by genetics, while innate behaviors are.   C. Instincts are complex series of innate behaviors.   D. Instincts are governed by genetics, while innate behaviors are not.

Answer 1

-The true statement regarding internal and external fertilization is

D. External fertilization does not require sexual intercourse

In this case both the male and female gametes unite outside the body as in case of fish. It require moist or wet area to facilitate the sperm to swim to the egg.

-The molecules necessary for cellular respiration and efficient ATP synthesis is provided by

D. Gas exchange

The ATP produced by the aerobic cellular respiration by means of  oxidative phosphorylation because ATP is produced by the conversion of NADH and FADH2 to ATP in presence of oxygen through an electron transport chain. The oxygen that is required to form ATP enters into the body by means of gas exchange with the help of trachea or gills.

-Advantage of sexual reproduction is

The creation of new gene to improve survival

This new gene formation produces variation in the offspring which helps the species to adapt in the new environment for the survival.

- The true statement of saltwater and freshwater animal waste management systems is

C. Both saltwater and freshwater animals don't need to eliminate waste, as it diffuses out of their bodies naturally

This occurs due to osmoregulation mechanism by the skin and gills of the fish to balance salt and water content in the body.

-The true of innate behavior that are described as instinct is

C. Instincts are complex series of innate behavior.

Both instinct and innate behavior are the inherent characteristic of a living organism towards a particular complex behavior. Behaviors that are closely controlled by genes with no environmental influence are called innate behaviors. Innate behaviors that do not have to be learned or practiced which has the ability to perform a behavior when the individual for the first time is exposed to the proper stimulus is known as instinctive behaviors.