JELLYFISH BIRTH

In this video you can see how jellyfish are born asexually by budding (polyp), they are born as ephirae and they quickly become medusae. Medusae reproduce sexually (male and female gametes). This completes the lifecycle of the jellyfish.

CORALS EATING

In this video you can see how corals are artificially feed, corals are cnidarians and they only have the polyp body shape.

PHYLUM CNIDARIA: ANEMONES

HOW DO SPONGES EAT?

As you should know sponges are filter feeders, they move water around them ( with the help of choanocytes) to get nutrients from it. You can see the evidence in this video.
Sponges are the simplest animals on Earth and they constitute the phylum PORIFERA.

EXAM REVIEW (POSSIBLE QUESTIONS AND ANSWERS)

Why are plants autotrophic organisms? 

Because they can make their own food

What's chlorophyll? 
 

It's a green pigment that all plants have and need to absorb sunlight

What do plants need to perform photosynthesis? 

Sunlight, carbon dioxide, water and minerals/mineral salts

Which substances are produced during photosynthesis? 

Oxygen and glucose

Where does photosynthesis take place? 

In the leaves of all plants 

What types of non-vascular plants are there? 

Mosses and liverworts

What's the function of flowers?

Reproduction of plants

What types of flowering plants are there? 

Gymnosperms and angiosperms

What is pollination?

It's a process by which pollen is transferred from the anther to the stigma

What is fertilisation? 

Is the process by which male and female gametes join and form fruits and seeds

EDIBLE PARTS OF PLANTS

As we have seen, plants create their own food through the process of photosynthesis, they can store the food they create in any of their parts: roots, stems, leaves, flowers...

This food is useful for us too, we can eat any part of a plant. Plants have plenty of healthy vitamins and carbohydrats and are an excellent source of food for humans.

Some examples of edible plants are the following:

ROOTS:, carrot, beetroot, turnip, radish...

STEMS: onion, celery,  potatoe, leek, asparagus, garlic...

LEAVES: lettuce, spinach, cabbage, chard, parsley...

FRUITS: apple, tomatoe, peach, grapes, strawberries, prun...

SEEDS: sunflower seeds, rice, corn, wheat, beans, peas, lentils, coffee, almond, hazelnut...

FLOWERS: cauliflower, broccoli, artichoke, caper, saffron, tea...

FERNS

Ferns are the most primitive of the vascular plants. They have a system of highly developed conduits to transport the sap ( xylem and phloem). Their parts are also named differently from the typical parts of flowering plants. They reproduce by spores that mature in the sporangia called sorus.