In most____ , males and females cooperate in care of the young. a. mammals c. fishes b. birds d. all of the above

Q: Which of the following is a function of the reproductive system? (A) to produce all of the body's…

A: The reproductive system has mainly four functions. First one is to produce egg and sperm cells,…

Q: Chimpanzee males have large testes for their body size. One widely accepted theory proposed to…

A: We often compare the population with the trait to other population. In the case of chimpanzee ,…

Q: Is the feather on the right side of the picture an adult male, adult female or juvenile? O Adult…

A: The presence of feathers in birds is their unique feature. Feathers provide insulation to birds and…

Q: Seahorses are a good example of uniparental care  True  False

A: Parental care  It is defined as a behavioural and evolutionary strategy adopted by some animals,…

Q: Read following statements w.r.t. cockroach and choose the option which correctly states true and…

A: Cockroaches are insects that belong to the order Blattodea. There are 4600 species of cockroaches…

Q: Which statement about menopause is  most correct? A. Menopause has to be adaptive because…

A: C. Several hypotheses for menopause as an adaptation have been proposed, but more evidence is…

Q: All fish, all birds and all mammals are A animals with internal fertilization. B carnivores. C…

A: Classification of animals includes the following phyla:Phylum - PoriferaPhylum - CnidariaPhylum -…

Q: Secondary sexual characteristics or sexual often result from sexual selection? O dichotomy O…

A: The sexual characters are appeared at the stage of puberty in an individual.

Q: Compared to organisms that reproduce sexually, organisms that reproduce asexually are - O A. more…

A: Introduction  Reproduction is the characteristic of all biological species present on the Earth. All…

Q: Internal and external fertilization differ in that species thata. produce an amniotic egg have…

A: The external fertilization process usually takes place in an aquatic environment where the male and…

Q: Aquatic animals in which fertilisation occurs in water are said to be: (a) viviparous without…

A: Animals show two types of fertilization that includes external fertilization and internal…

Q: A baby born four weeks before its due date is most likely to have anunderdevelopeda. central nervous…

A: The central nervous system begins developing two weeks after fertilization and continues developing…

Q: Elephant Seals have a polygynous mating system, in which a few males mate with many females while…

A: Elephant seals are carnivorous mammals that are found in the Americas. These seals live in colonies.…

Q: Make guarding is a reproductive tactic that functions to directly:  A. Increase the number of males…

A: Mate guarding is a term used to describe male and female behaviours aimed at preserving reproductive…

Q: Birds v [ Choose ] Viviparity Ovoviviparity Oviparity Some sharks Gorillas [ Choose ] Most if not…

A: Reproduction is the biological process by which an organism reproduces an offspring that is…

Q: A mother duck gives birth to nine new ducklings. The mother duck introduces her baby ducklings to…

A: To live, all species must conform to their surroundings. This means adapting to survive the…

Q: Mammals are the most successful & dominant animals today" Give evidence.

A: Mammals  Mammals are the vertebrate animals that have mammary glands.

Q: Describe how climate change is negatively affecting caribou reproductive success.

A: Reproductive cycle and environment: The reproductive cycle defines the changes that occur leading to…

Q: For the first 8 weeks of gestation, a conceptus is nourished mainly by a. The placenta. b. Amniotic…

A: A conceptus receives nutrition is totally depends on the state. The foetus stage receives nutrition…

Q: In male mammals, excretory and reproductive systems share(A) the vas deferens.(B) the urethra.(C)…

A: The organ system is a group of organs that work together to perform a particular function. The organ…

Q: which germ layer (tissue) gives rice to our nervous system and outer coverings. a) endotherm b)…

A: The mesoderm, or middle tissue, gives rise to most of the muscle and connective tissues. Finally the…

Q: Most mammals are born with the instinct to suckle (nurse). If a mammal is not born with this…

A: Most mammals are born with the instinct to suckle (nurse). It a mammal is not born with this…

Q: The archenteron develops into(A) the mesoderm.(B) the endoderm.(C) the placenta.(D) the lumen of the…

A: Gastrulation is the process of reorganization of the blastula, a hollow structure into a two or…

Q: Two animals of different species would be least likely to O produce fertile offspring (offspring…

A: Species are group of living organisms that have similar characteristics . They have ability to…

Q: In assisted reproductive technology (ART), there is a need to stimulate the ovaries to produce more…

A: C. Clomiphene.

Q: Compare the a.reproductive system and development b.regulation and maintenance c. communication and…

A: Since you have posted a question with multiple sub-parts, we will solve the first three sub-parts…

Q: The loser of a polyclad flatworm penis fencing bout A. expends energy healing wounds B. expends…

A: Hi, Thanks For Your Question.  Answer : Correct Option Is D

Q: Shown here are graphs that plot the percentage of fertilizedeggs containing males against the…

A: Temperature-dependent sex determination (TSD) is a means of non-genetic sex determination in some of…

Q: |(A) A well trained alien biologist visiting earth would be able to tell that the mating system of…

A: Note: Since you have posted multiple questions, so we will be solving the first one for you. As per…

Q: Male birds of paradise have evolved to create sophisticated dance routines to attract females. This…

A: Selection is a process that play a huge role in evolution. Those who are better suited to survive…

Q: On which sex is the forehead more nearly vertical a. Males b. Females  c. On both sexes d. Only…

A: Introduction: The skull is a bony hard construction that upholds the face and structures a…

Q: Which of the following is a true statement?(A) All mammals have menstrual cycles.(B) The endometrial…

A: Reproductive system (or genital system) is used for the sexual reproduction. The female attains…

Q: In the list of animals given below, hen is the odd one out.Human being, cow, dog, henThe reason for…

A: Reproduction is a process through which an organism produces organisms of similar kinds. It is of…

Q: The period from conception to kidding is A.heat period B.heat cycle C.brooding period D.gestation…

A: Kidding is the act of the birthing process in goats. Conception is the actor conceiving by females.

Q: A region of the canary forebrain shrinks during the nonbreedingseason and enlarges when breeding…

A: Canary is a small song bird belong to finch family. It is often used in research to study, how it…

Q: Thenumber of eggs laid by a female is called her:a.fertility.b.gonadosomatic index.c.growth…

A: In the reproductive body of an animal, an egg is ellipsoidal or spherical in shape. Within the egg…

Q: Using his antennae, the male moth finds female moths by following a trail of airborne chemicals,…

A: Option (c) is the correct answer .

Q: The animals that produce new young ones are known as:         I.   Oviparous        II.…

A: Embryogenesis is the natural process in which the embryo is developed from the zygote after…

Q: Chihuahua and Great Dane dogs are of the same species but do not usually mate, why? A. Because…

A: Chihuahua and Great Dane dogs are of the same species but do not usually mate Because their…

Q: represents The figure below snows relative changes in reproductive normones during a female ovarlan…

A: LH  is secreted by the anterior pituitary gland.  LH plays an important role in sexual development…

Q: When the siblings of centenarians were studied, it was determined that … a.Genetics has no role in…

A: * study shows that the exceptional longevity will runs strongly in families * The disability is…

Q: True or false: Studies can never include pregnant females because they are a vulnerable group and no…

A: Research studies utilizes many datas from individuals, situations and conditions.

Q: Cuckoldry occurs when... Females provide all parental care while males do not provide any care for…

A: Option 3 is the answer. Cuckoldry is a term related to parental care in ecology.

Q: Read following statements w.r.t. cockroach and choose the option which correctly states true and…

A: The phylum arthropods are unique in a way due to the presence of exoskeleton and segmented body.…

Q: A cow with scurs and a bull with no scurs have an offspring. Thisoffspring could bea. a female with…

A: Scurs A scur is a small horn like appearance present on the skin of the cattles. Or in other words,…

Animal Behavior

Animal behavior can be defined as all the things that animals do. In response to a stimulus, an animal performs a certain fixed action pattern, or FAP, of behavior. This response occurs to make the animal more adaptable to change. So, behavior is generally a stimulus-oriented response. A behavior is an expression of the capabilities of the nervous system. A stimulus is determined by the environment, while the nervous system determines a response.