The detachment of gravid proglottids either singly or in groups from the body of the tapeworm is called apolysis

Yes. If multiple fission produces four or many daughter individuals by equal cell division and the young ones do not separate until the process is complete, then this division is called repeated fission e.g. Vorticella

In amphibians, the fertilization is external (taking place outside the body of a female organism) whereas internal fertilization takes place in aves.

A - Chromosomes
B - Nucleoli
C - Nucleus
D - Longitudinal furrow
E - Nuclear constriction
F - Daughter Euglena

A - Individual parent
B - Bud forming
C - Bud growing
D - Osculum
D - Daughter individual

A - Monaxon spicules
B - Micropyle
C - Outer membrane
D - Archaeocytes
E - Inner membrane

In artificial parthenogenesis, the unfertilized egg (ovum) is induced to develop into a complete individual by physical or chemical stimuli. E.g. Annelid and seaurchin eggs.

It is a type of fertilization. In lower organisms sometimes the entire mature organisms do not form gametes but they themselves behave as gametes and the fusion of such mature individuals is known as hologamy.
E.g. Trichonympha.

It is a type of fertilization. In exogamy, the male and female gametes are produced by different parents and they fuse to form a zygote. So it is biparental. E.g. Human - dioecious or unisexual animal.

When buds are formed on the outer surface of the parent body, it is known as exogenous budding. E.g. Hydra.

There are five types of fission. They are Binary fission, multiple fission, sporulation, and strobilation.

Parthenogenesis is the phenomenon in which female gamete directly develops into a new organism. (e,g:) Honeybee (male or drone).

In monocellular organs cell division is itself a mode of reproduction. (e.g:) Bacteria, Euglena and Amoeba.

1. Sexual reproduction is considered to be a better mode of reproduction because it creates a hybrid that has more vigor than the parents.
2. It also creates the variation in off springs making its survival better.
3. The fact that most of the eukaryotes reproduce sexually in evidence of its evolutionary success.
4. In many animals, it is actually the only mode of reproduction.

1. In Greek Parthenos means Virgin, Genesis means Produce.
2. Development of a haploid (n) egg into a complete individual without fertilization is known as parthenogenesis.
3. It was first discovered by Charles Bonnet in 1745.
4. Parthenogenesis occurs naturally in some invertebrates (e,g:) Nematodes, Water fleas, Scorpians, Parasitic (wasps).