Sponges are the simplest multicellular organisms, classified by their primitive cellular-level of organization, their porous bodies, and their filter-feeding system. Sponges have specialized cells that can carry out distinct functions within the organism.

A tissue, organ or organism that is made up of many cells is said to be multicellular. Animals, plants, and fungi are multicellular organisms and often, there is specialization of different cells for various functions.

Few examples of multicellular organisms are human beings, plants, animals, birds, and insects.

Having or consisting of many cells or more than one cell to perform all vital functions. Examples of organisms that are multicellular are humans, animals and plants. Word origin: L, comb.

The first evidence of multicellularity is from cyanobacteria-like organisms that lived 3–3.5 billion years ago.

Large, multicellular life forms may have appeared on Earth one billion years earlier than was previously thought. Macroscopic multicellular life had been dated to around 600 million years ago, but new fossils suggest that centimetres-long multicellular organisms existed as early as 1.56 billion years ago.

Most of us know that at some point in our evolutionary history around 600 million years ago, single-celled organisms evolved into more complex multicellular life. The evolution took just 50 weeks, and was triggered by the introduction of a simple predator.

In order to survive, all living things need air, water, and food. Animals obtain their food from plants and other animals, which provides them with the energy they need to move and grow. An animal’s home (habitat) must provide these basic needs (air, water and food) along with shelter from bad weather and predators.

A non-living thing is anything that was never alive. In order for something to be classified as living, it must grow and develop, use energy, reproduce, be made of cells, respond to its environment, and adapt.

All species of animals, land plants and most fungi are multicellular, as are many algae, whereas a few organisms are partially uni- and partially multicellular, like slime molds and social amoebae such as the genus Dictyostelium.

Yes plants are considered multicellular as they are made of more than one cell while bacteria is only a single cell.

Plants are all multicellular and consist of complex cells. In addition plants are autotrophs, organisms that make their own food.

Algae, or plant- like protists , have characteristics of plant cells. Examples: chlamydomonas (Unicellular), Volvox and kelp (both multicellular).

Multicellular examples of algae include the giant kelp and brown algae. Unicellular examples include diatoms, Euglenophyta and Dinoflagellates.

Unicellular algae

• Euglenophyta, flagellated, mostly unicellular algae that occur often in fresh water.
• Chlorophyta (green algae), mostly unicellular algae found in fresh water.
• Diatoms, unicellular algae that have siliceous cell walls.

Algae can either be unicellular and multi-cellular while plants are multi-cellular organisms. Algae are nonvascular. They don’t have structures such as connective tissues, leaves, stems and roots unlike plants.

Green algae contain the same carotenoids and chlorophyll a and b as land plants, whereas other algae have different accessory pigments and types of chlorophyll molecules in addition to chlorophyll a. Both green algae and land plants also store carbohydrates as starch.

he Euglena is a large genus with different species of unicellular protists. They have both plant and animal features. They are all motile by the flagella like animals. Most of them have chloroplasts similar to algae.

Marine Algae: The 3 Types of Seaweed

• Brown Algae (Phaeophyta)
• Green Algae (Chlorophyta)
• Red Algae (Rhodophyta)

It is edible seaweed. It is among 70 genera of edible algae.

The most commonly consumed macroalgae include the red algae Porphyra (nori, kim, laver), Asparagopsis taxiformis (limu), Gracilaria,Chondrus crispus (Irish moss) and Palmaria palmata (dulse), the kelps Laminaria (kombu), Undaria (wakame) and Macrocystis, and the green algae Caulerpa racemosa,Codium and Ulva (see Tseng.

by Biology experts to help you in doubts & scoring excellent marks in Class 11 exams. An alga which can be employed as a food for human being is Chlorella and Spirulina….Question : An alga which can be employed as food for humna being is.

Ulothrix, genus of filamentous green algae (family Ulotrichaceae) found in marine and fresh waters. Each cell contains a distinct nucleus, a central vacuole, and a large thin chloroplast with at least one pyrenoid. The specialized cell for attachment is called the holdfast, and the filaments are typically unbranched.