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1)Difference between phanerogamous & cryptogamous? 2)what is sympiotic relationship. give an example? 3)starfish is not a fish why? 4)whale is a mammal not a fish?

1,Difference between phanerogamous & cryptogamous
Cryptogam means "hidden seed", and refers to fungi, mosses, and liverworts. These organisms reproduce by means of spores, which are too small to be seen
Plants with visible seeds (flowering plants and gymnosperms) are called phanerogams.

2,what is sympiotic relationship. give an example?
Symbiosis, the mix-up of two or more different species, is directly connected to symbiotic relationships examples. Hence, whether it’s about people, animals, insects or plants, such connections happen on a different level and they’re split in various categories. Some of the most common and frequent symbiotic relationships examples are mutualism, commensalism and parasitism.

Mutualism is a type o connection between two different species in which both of them have something to gain. A common type of such relation usually happens in Africa when the crocodile needs a plover bird to clean his teeth. Hence, both the animal and the bird have something to win; the plover bird gets to eat the food between the crocodile’s teeth, while the crocodile gets cleaner mouth to keep surviving and hunting. Another mutualism example of a symbiotic relation happens between the flower and the honey bee. It’s quite common and it’s a great way to understand better the process. Thus, the honey bee gets pollen from the flower and the flower gets pollinated, meaning it has the chance to blossom and spread faster. When it comes to humans, obvious symbiotic relationships examples happen with animals. Cats and dogs for example, they give love and affection to the owner, and they get shelter, food and proper care. Therefore, both species have something to gain from this process.

symbiotic relationships examples are numerous. Another type worth taking into account is commensalism. In this situation, one specie benefits and the other is not harmed at all. The process is extremely common among humans and animals. For example, we take eggs from the chicken without harming it, we take milk from a cow without killing or hurting the animal, and so on. The relations between humans and animals are the best ways to understand commensalism.

Parasitism is yet anther example of symbiotic relationship. The conception is fairly simple and it can be seen in humans perfectly. Mosquitoes for example, represent one type of parasitism. Other kinds can be seen in animals who have flees and ticks. Symbiosis can be a vital process for some species. A great example is pray-predator in which only one species can win the other being killed and annihilated. This type of symbiosis is probably one of the most common and it can be seen in humans, animals, insects and even plants. Some other symbiotic relationships examples are between people and animals like sheep, cows, pigs etc. Humans kill them in order to ensure food and a healthy lifestyle. In this case, the people cannot avoid killing the animal because the survival instinct is extremely powerful. Hence, in a world where symbiosis is everywhere, sometimes it is a battle of the fittest.

When two species collide and form any kind of relationship, the process of symbiosis is formed. Basically, the process means “living together” and it comes in different types among species. Whether these symbiotic relationships examples are commensalism, parasitism or mutualism, their purpose is the same, to interact with different species in order to ensure survival.

3,Starfish is not a fish why?
Star fish are not fish because they are not vertebrates and do not have fins or tails. Star fish are Invertebrates, that means they have no backbones.
Starfish are among the most familiar of marine animals and possess a number of widely known characteristics, such as regeneration and feeding on mussels. Starfish possess a wide diversity of body forms and feeding methods. The extent that Asteroidea can regenerate varies with individual species. Broadly speaking, starfish are opportunistic feeders, with several species having specialized feeding behavior, including suspension feeding and specialized predation on specific prey.

4,whale is a mammal not a fish
Whales have all the characteristics of mammals they: perform internal fertilization, produce milk for their young, breathe air, have hair (as fetuses), and are endothermic vertebrates.

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