The fate of each blastomere is foretold. What will that cleavage be?
Correct answer: D. Spiral and determinate
- A. Spiral and indeterminate
- B. Radial and indeterminate
- C. Radial and determinate
- D. Spiral and determinate
Explanation
A spiral and determinate cleavage is that in which the lines or planes of cleavage are not symmetrical between poles instead these are diagonal to the polar axis and produce unequal cells around the axis of polarity and all the blastomeres have determined role to play in the formations of embryo. The fate of each blastomere is foretold.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
Practise Biodiversity and Variety of Life
3,130 free Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Kingdom Animalia questions
Which of the following is an example of a tetrapod?
Which of the following is not found in series protostomia?
Centipedes belong to which class of arthropods?
Which of the following is an oviparous animal?
Which of the following is the first group of invertebrates that have developed a closed circulatory system?
The shell of the egg is leathery in appearance in which of the following?: