Reproduction and life cycles – protozoan, Biology

Reproduction and Life Cycles – Protozoan

Asexual reproduction occurs in all protozoan through fission, budding and cyst formation. In this method the organism reproduces to form its own type without forming gametes. The parent organism transfers an entire set of diploid chromosome to the daughter cell.

411_Reproduction and Life Cycles – Protozoan.png

       Figure: Binary fission in protozoan a) In a flagellate trypanosoma b) In a ciliate, Paramecium.

Sexual reproduction involves meiotic nuclear divisions that give rise to haploid gametes from the diploid nucleus and the union of gametes then restores diploidy. It may involve gametes from different parents in which case it is called amphimictic or may involve gametes that may arise from the same parent i.e. automictic. The uniting gametes may be the whole organism or only the nuclei. Where the whole organisms unite the process is termed syngamy and where only the nuclei unite the process is termed conjugation. Syngamy occurs in all groups where sexual reproduction occurs except in ciliates where conjugation occurs.

Posted Date: 1/12/2013 6:13:47 AM | Location : United States







Related Discussions:- Reproduction and life cycles – protozoan, Assignment Help, Ask Question on Reproduction and life cycles – protozoan, Get Answer, Expert's Help, Reproduction and life cycles – protozoan Discussions

Write discussion on Reproduction and life cycles – protozoan
Your posts are moderated
Related Questions
Q. Where do the photochemical and the chemical phase of photosynthesis occur? The photochemical phase of the photosynthesis procedure occurs mainly on the thylakoids the green

Q. Explain What is Probing Depth? This parameter is applicable to one stage implants when they are evaluated prior to prosthetic phase and used to evaluate the health of the im

CONCEPT OF NURSING UNIT: Concept in the design and facilities of nursing unit has been changed time to time based on the different categories of patients and peculiarities of

Q. What is thyroid disease? Thyroid disease: Thyroid disease is associated with angina. Anginas pectoris presents itself in the form of speific symptoms which tend to re- oc

Explain the Bulimia Nervosa? Diagnostic Criteria Bulimia Nervosa patients, unlike those of anorexia nervosa with binge and purge subtype, are typically within the normal weight

Mechanoreceptors - Receptors Mechanoreceptors involve those receptors involved in perception of touch, pressure, tension, hearing, vibration, gravity, muscle tension etc. Th

What types of individuals in a population are represented by the two ends of a bell curve?

Discuss why humans not evolve with one central repository of DNA rather than having it replicated throughout the body?

Peak Flow Velocity  fs  derived  from Doppler  shift by  rearranging Doppler equation: V = C/2 x ΔF/Fo Various  information can be obtained from spectral display

Explain Pseudocoelomates in classification animal kingdom? In terms of body organization, Pseudocoelomates fall between the Acoelomates and the Coelomates. The body cavity in