what structure is the pointer pointing to? O Notochord what germ tissues are those structutres made from? O Blastopore -actoderm, andoderm O Somite O Archenteron mesoderm O Blastocoel

Q: In a newly fertilized egg, the vitelline layer O secretes hormones that enhance steroidogenesis by…

A: In Sea urchin, a capacitated sperm first crosses zona pellucida layer then it passes through…

Q: Are all of the cell nuclei in the embryo sac haploid or is just the egg haploid?

A: The group of organisms with eukaryotic cells having cell walls and autotrophic nutrition are called…

Q: 14. Name the stage of development in this fish embryo..

A: After fertilization diploid zygote (2n) is developed. Then it is undergoes several stages of…

Q: What is the correct order of the five stages of neural tube formation during primary neuruetion O…

A: Neurulation is a cycle wherein the neural plate twists and later fuses to frame the hollow tube that…

Q: What are embryophtes?

A: Plants are mainly multicellular organisms, predominantly photosynthetic eukaryotes of the kingdom…

Q: Sawfly larvae differ from Lepidoptera caterpillars | by having more prolegs. | by having…

A: Sawfly larvae ( belonging to order Hymenoptera) are immature stages of wasps or bees that have…

Q: How are mammalian extraembryonic membranes formed?

A: The layers encircling the embryo inside the uterus are known as extraembryonic membranes. The…

Q: Is an zygote a life?

A: Cell division is a process of a parent cell replicating it chromosomal content and dividing itself…

Q: Draw and asnwer the blank spots

A: Approach to solving the question: Detailed explanation:Examples: Key references:

Q: What structure provides oxygen to the growing organism? placenta uterine wall embryonic disk neural…

A: Fertilization is the process of fusion of male and female gametes that takes place inside the…

Q: Are all of the organ systems fully developed in a free- swimming larva? Which organ systems are…

A: There are some major organ systems in the body of the animals. These organ systems have a specific…

Q: What primary germ layer gives rise to the notochord? What is the function of the notochord?

A: Notochord It is a flexible, rod shaped body found in embryos of all chordates.

Q: Q1. How many stages of cleavage can you identify? Q2. What is the adult fate of notochord?

A: Cleavage is the division of cells in early embryo. Notochord is a cartilaginous skeletal rod…

Q: Come care and contrast the main difference in reproductive tracks of female fetal pig and human…

A: Reproductive tract - Female reproductive tract is located in the pelvis. Female reproductive tract…

Q: What is the thickened dark linear band which appears caudally in the midline of the dorsum of…

A: Each vertebra in the vertebrate spinal column is an irregular bone with a complicated structure made…

Q: What are the three typesof germ layers that formtissues and organs in animals?

A: The tissue is a group of cells that perform a specific function. Basically a group of cells who…

Q: Why must animals be modifi ed in the embryo stage?

A: In this question, we will discuss the fundamentals of how humans have learned to manipulate genetic…

Q: What is the major difference between the notochord and the neural tube?

A: The notochord is a cartilaginous, skeletal structure that supports the body's growth in all…

Q: Why are the offspring of a male and a hermaphrodite more variablethan the offspring of a…

A: Hermaphrodites in reproductive biology are organisms that have both male and female sex organs. For…

Q: Explain the Type of protostome that produces atrochophore larva ?

A: Larvae are seen across the animal kingdom and are a specific juvenile form before they metamorphose…

Q: If activity of the organizer is inhibited, what does the embryo become? A mass of notochord. A mass…

A:

Q: Where is the egg found in seed plants?

A: Seed plants are a group of plants. Gymnosperms and angiosperms form the group. Their seeds have…

Q: Before neurulation occurs, the cells that will later become neural crest cells are part of the…

A: Before neurulation occurs, the cells that will later become neural crest cells are part of the…

Q: What happenes if fertilization doesnot takes place in utreus?

A: Humans, as mammals, have the capability to reproduce sexually. Sexual reproduction requires the…

Q: Blastocoel Visible nucleus O Archenteron Blastopore O Fertilization envelope

A: Formation of the fertilization membrane/fertilization envelop  The most important changes that…

Q: Nematocysts in cnidarians are O reproductive cells O excretory organs sets of muscle cells O…

A: Cnidarians are a group of invertebrate animals that include jellyfish, sea anemones, corals, and…

Q: lame specific structure "A" Ovary lame specific structure "B" anther A-

A: The given figure it of a flower. Flower is considered to be a reproductive organ of the plant. If…

Q: How long does I take for pork tapeworm eggs to hatch

A: It take approximately 40-60 days( that is from 1.5 month to 2 months)

Q: A hypothesis is a statement the does not clearly states the relationship between biological variable…

A: Introduction :-  Hypothesis is a mixture of two words : *Hypo* ( stands for pre or before)+…

Q: What is developmental mechanism?

A: In biology, a mechanism is a system of causally interrelated elements and processes that result in…

Q: What is ovarian funnels in earthworm?

A: Earthworms are the members of the phylum Annelida of the kingdom Animalia.  The body of the…

Q: What is the male reproductive system of frog?

A: Sexual dimorphism is present in frog. During the breeding system, both the male and female frogs…

Q: What are the molecules being secreted by the organizer in a regional fashion such that the first…

A: Development of embryo -- The development in developmental biology gave a milestone by the discovery…

Q: During the creation of eggs, only one egg will be viable, the other 3 eventually break down. What…

A: Oogenesis is divided into three stages, which are the Multiplication phase, growth phase, and…

Q: The ______ carries food and water to the developing zygote.

A: Nutrients are necessary for maintaining the growth of the embryo. In plants, the endosperm is the…

Q: Label each tissue with the specific source germ cells: v Gastrointestinal tract A. Intermediate…

A: We are tripoblastic organisms that means we contains three types of germ layers that includes…

Q: What mechanisms have evolved in animals with(a) external fertilization and (b) internal…

A: The process that involves fusion of the male and female gametes namely sperm and ovum respectively…