Based on current knowledge, how would you explainthe difference in the percentage of tadpoles thatdeveloped from the two kinds of donor nuclei inFigure 20.16?

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A: The chorioallantois or chorioallantoic membrane abbreviated as CAM is the vascular membrane that is…

Q: Why an elephant always gives birth only to a baby elephent and not same other elephant?

A: The reproduction is a process by which an organism is capable of producing a new organism. The…

Q: in The Red Queen Competition What occurs during the race?

A: Answer

Q: in the poem convey?

A: Poems are creations that try to express the thoughts and emotions of the poet. It is a lyrical flow…

Q: Lateral line system is found in fishes and aquatic larval amphians. Give reason.

A: The lateral line system refers to the system of organs that sense what is in contact with such as…

Q: Describe the development of the respiratory system in the embryo

A: In the fetus, the respiratory system development begins early. This complex process includes various…

Q: Why are specialized respiratory structures necessary in a tadpole but not in a flatworm?

A: Flatworms belong to phylum Platyhelminthes. These organisms have dorso-ventrally flattened body.…

Q: What are the fates of the saccule, stride and endolymphatic duct in the adult organism? Where is the…

A: Introduction The Human Body Is Made Up Of Five Sense Organs That Perform Five Separate Critical…

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A: Cytoskelton includes two components in addition to actin: intermediate filaments and microtubules.…

Q: choose between the tiven

A: Introduction An ecosystem is a geographical area in which plants, animals, and other species, as…

Q: Explain the significance of “jumping gens.”

A: Transposable elements also known as jumping genes is a DNA sequence that can change its position…

Q: The “heart” of arthropods is located (ventrally/centrally/dorsally/sagitally)?

A: The “heart” of arthropods is located dorsally.The arthropods are known to possess an open…

Q: Use the figure below, which shows th to complete items 1-7.

A: Ecological pyramids :- An ecological pyramid is a graphical representation of the relationship…

Q: In avians, what is the purpose of the area opaca?

A: Avians are the group of warm blooded vertebrates which are characterized by presence of…

Q: Explain the eccentric position of the early frog blastocoel. (min. 5 sentences)

A: A zygote is formed during the embryonic development that occurs when the egg is fertilized by a…

Q: What parts of the frog are these?

A: Labeled parts of the frog are -  A - liver .  There are three lobes of liver . Liver secrete bile…

Q: Infer how these changes occurred in the mouse overtime. Use the word: variation

A: In the given question, there are four images given representing the population of the pocket mice in…

Q: Newborns are at much higher risk for dehydration thanadults. Why?

A: A baby which is 2 months old from his or her birth is considered newborns.

Q: Occasionally, two primitive streaks form in one embryonic disk. Predictthe result. What happens if…

A: Primitive streak : A primitive streak is defined as a transient structure that forms during the 15…

Q: Starfish Aboral Side Describe the functions of the observed structures and compare the morphology…

A: The taxonomical classification of organisms gives a vivid account of the features of the organisms…

Q: What is the role of blood sinuses in the cockroaches?

A: Introduction  All aerobic organism need oxygen to survive. This oxygen can be taken either by skin…

Q: Pathway (in order) of the following in the frog: a. urine b. egg cells c. sperm cells

A: Introduction :- In sexual reproduction, sperm is the male reproductive cell, or gamete (forms in…

Q: What are thepredominating chemicalcompounds respectively ineggshell, white and yolk?

A: Egg contains three parts: egg shell, egg white and egg yolk. The shell contains the viscous liquid…

Q: The surface area to volume ratio of a 4 cell stage blastomeres is 0.095 to 1?

A: There is an average increase of 22% S/V ratio after each division.

Q: How does a kinorhynch burrow itself into the mud. Explain the locomotory mechanism.

A: As part of the meiobenthos, Kinorhyncha is a phylum of small marine invertebrates that can be found…

Q: Based on the text for mosquitoes: 1. Describe how the pest mates. 2. Describe the development of the…

A: INTRODUCTION Mosquitoes are common, flying insects that live in most parts of the planet . Over…

Q: For item 2 choose only one correct answer. No need for explanations.

A: Photosynthesis is a food-making mechanism used by green plants and some other lower-level organisms.…

Q: How did light exposure affect the survival of Daphnia when exposed to a  predator?

A: Daphnia is a genus of planktonic crustaceans belonging to the class Arthropods. Its predators are…

Q: What is the indication of the development of Circulatory System in the 33-hour chick embryo? What is…

A: Organisms develop as a complex individual from a single cell of the zygote. The developmental…

Q: Give the digrammatic representation showing Blood-corpuscles of Frog?

A: Amphibians:   They are small vertebrates and almost live in a moist environment. They have special…

Q: During the evolution of animals , bilateral summetry accompanied cephalization . suggest a reason…

A: Evolution is the process by which an organism inherits or adapts favourable characteristics that…

Q: What do you mean by blind-sac plan?

A: An animal is any member of the kingdom Animalia. Generally, animals are characterized by a…

Q: Give the digrammatic representation showing T.S brain of frog through four different regions?

A: Frog is an amphibian, semi-aquatic falls under the phylum Chordata. Its taxonomical hierarchy is…

Q: why it would be harmful for a human mother’s blood to pass across the placenta and into the fetus?…

A: The unborn baby (foetus) relies on its mother for nourishment and oxygen during pregnancy. His or…

Q: Can the dorsal lip of the blastopore inducecells in another part of the amphibian embryoto change…

A: The dorsal lip of a blastopore is a structure formed during the early development of the embryo. The…

Q: What is the Process/Mechanism Involved in The Left Atrium of a frog

A: Introduction Frogs are amphibians and have a closed circulatory system and they have incomplete…

Q: How is the circulatorysystem of reptilescharacterized? What is thebasic difference between…

A: Reptiles are tetrapod animals, which belong to the class Reptilia. They include turtles, crocodiles,…

Q: During the evolution of animals bilateral summetry accompanied cephalisation suggest a reason for…

A: The process of cephalization is considered an evolutionary trend in which the sensory organs, mouth,…

Q: 6 -5 .1 2 10 mm Frog Tadpole Transverse Section

A:

Q: How come poo-poo always pee-pee time, but pee-pee time is not always poo-poo time?

A: Given: To understand why poo poo always pee pee time and pee pee is not always poo poo time.

Q: IDENTIFICATION (Developmental Biology) Question #1. Development of specialized cells types from the…

A: The development of the embryo from the single celled zygote undergoes different transitional staged…

Q: Give the digrammatic representation showing Brain of frog -Dorsal view?

A: The brain is considered as one of the largest and most complex organs present in the human body. It…

Q: How is the circulatory system involved in the exchange of materials and transport of waste products…

A: The cardiovascular system and lymphatic system make up a frog's circulatory system. Blood, blood…

Q: BASED ON THE TEXT: ON MOSQUITOES 1. Describe how the pest mates. 2. Describe the development of…

A: The female mosquito mate with male mosquito in aerial leading to insemination trasfering seminal…

Q: answer item 2 only

A: Multiple sclerosis is a disorder of CNS . . In this condition demyelination of the neurons occurs.…

Q: What is the relationship of the bats' status hibernation in the physiological mechanism with the…

A: Hibernation involves an extreme reduction in metabolic rate , heart rate and respiratory rate that…