explain Three egg types in variegated four-o’clocks.

Q: Is the embryonicdevelopment in birds direct orindirect?

A: Animal developmental process can be direct or indirect. Direct development: It refers to the…

Q: Is the type and pattern of the cleave of an egg the same to all species of animals?

A: During the mitotic division, the cytoplasm of the egg is divided into multiple parts which then…

Q: 29. Parthenogenesis is the process that eusocial insects commonly use to: a) Create new hives after…

A: Insects are a class of invertebrate animals that are characterized by having three body segments…

Q: Explain how the formation of the primitive streak during gastrulation relevant to the primitive…

A: The emergence of the primordial streak in the caudal portion of epiblast layer, which is a sign that…

Q: Explain one key process involved in the development of insects from one instar stage to another

A: Before the insect attains sexual maturity, the insect is referred to as a larva that undergoes…

Q: Describe the process involved in hermaphrodite reproductive strategy in chaetognatha.

A: Chaetognaths also called as arrow worm because of its shape as torpedo or arrow. These are dominant…

Q: Contrast developmental activities in embryos before and after they reach the mid-blastula…

A:

Q: What are the archenteron and the blastopore? What is the stage of the embryonic development in which…

A: Gastrulation is the phase in the embryonic development of animals. During this phase, the blastula…

Q: !) Consider the Spemann-Mangold organizer in amphibian development. Which of the -llowing statements…

A: The spemann-Mangold organizer helps in amphibian development.

Q: If the egg is fertilized it will develop in the

A: Fertilization is the process of a sperm fusing with an ovum. When the egg moves down the Fallopian…

Q: Illustrate an egg in the morula stage. How does its size compare with that of the fertilizied egg?

A: MORULA STAGE OF EGG- It is an early stage of embryo consisting of 16 cells called blastomeres  which…

Q: What is hypopharynx in cockroach?

A: Cockroaches are of ancient lineage and  have close resemblance with Insects so are known as tropical…

Q: Briefly discuss avian early embryonic development, starting with fertilization and oviposition,…

A: Introduction  The life starts from single cell called Zygote. A zygote is formed by the fusion of…

Q: Describe the Gastrulation in Caenorhabditis elegans.

A: The study of embryo development is known as embryology. This covers the transformation of a…

Q: How could you tell if a prepubertal female had an overly active zona reticularis?

A: Adrenal gland cortex is divided into  Zona glomerulosa Zona fasciculata  Zona reticularis  Zona…

Q: what is the chromosomal system for determining sex in mammals?

A: Chromosomal determination of sex It is also known as allosomic determination of sex and is based on…

Q: How big do 4 O clocks become?

A: The four-o’ clock plants are also known as the beauty of the night or marvel of Peru. Their…

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: State the neuromere origin of each brain region?

A: Introduction Neuromeres Are Known As The Segments Of The Neural Tube That Forms The Embryonic Brain…

Q: Write a short note on fertilization in Riccia ?

A: These plants are small and thalloid, meaning they lack root, stem, and leaf differentiation. The…

Q: What would happen if two sperm fertilized the same egg cell? If twosperm fertilized two egg cells?

A: Step 1 Fertilization and implantation is the process of fusion of two types of gametes (spermatozoa…

Q: Describe the Central Nervous System mechanisms and pathways that control the cockroach startle

A: The word "cockroach startle" is used to describe cockroaches' fast and unexpected protective…

Q: Can 4 O clocks be transplanted?

A: Mirabilis Jalapa or Four O’ clock plant is an ornamental plant available in various colored flowers…

Q: Give the process of internal fertilization in turtle. Show illustration how the fertilization…

A: Turtles are a type of reptile known as Testudines. They are distinguished by a shell made primarily…

Q: Draw the H. nana egg and adult

A: H.nana or hymenolepiasis is caused by tape worm or cestode species. It is also called as dwarf tape…

Q: Explain early development of human from fertilization to hatching of the blastula.

A: Fertilization can be defined as the male gamete's fusion to the female gamete to form the zygote. In…

Q: Describe internal fertilization process in sea urchin.

A: The process of internal fertilization occurs when a male and female gamete fuse inside the female…

Q: Illustrate the top-to-bottom and head-to-tail orientation of the fruit fly embryo.

A: The fruit fly is known as Drosophila melanogaster is a common fly found on fruits like ripe bananas.…

Q: Explain how egg rotation and gravity determine anterior posterior patterning in chick embryos

A: Anterior posterior pattern formation is the regionalization process in which specific areas of cell…

Q: Where is the egg located in the archegonium?

A: In Bryophytes plants, the female and male sex organs are termed archegonia and antheridia…

Q: answer quickly What is the importance of the pharyngeal pouches in development? Discuss.

A: We can say that In embryology, the pharyngeal pouch is defined as "any of a series of evaginations…

Q: What are the sex dtermination in honey bee?

A: Sex-determination Sex-determination is a biological system which determines the sex of an offspring…

Q: What is the evolutionary significance of parthenogenesis in the class insects?

A: Parthenogenesis is a type of asexual reproduction in which the offspring develops from unfertilized…

Q: Why is it important to know the sex of the frog? and why do we study the external features of the…

A: Frogs are the animals belonging to phylum amphibian. There as called so because they can survive on…

Q: Identify four functions of invertebrate neurohormones and describe the regulation of insect…

A: The four functions of invertebrate neurohormones are as follows- 1. Reproduction 2. Molting3.…

Q: Explain the developmental and functional similarities and differences between:   1. Avian yolk…

A: Three fetal membranes are present in mammals; yolk sac, amnion, and allantois. Yolk sac and…