Plants differ from photosynthetic protists in that only...

Key Concepts

Multicellularity

Multicellularity refers to the organization of an organism as a complex system composed of multiple cells that differentiate and often specialize in various functions. While both plants and some photosynthetic protists may exhibit forms of multicellularity, the type and complexity of multicellularity in plants supports the development of specialized tissues and structures necessary for their survival in terrestrial environments.

Protected Multicellular Embryos

A defining feature of plants (embryophytes) is the development of a multicellular embryo that is nurtured and protected by the parent plant during its early stages. This process, which is a critical component of plant embryogenesis and the alternation of generations, ensures that the young embryo receives resources and protection from environmental stresses, a characteristic not seen in photosynthetic protists.

Transcript

0:00 All right.

00:01 So for this question, we are going to be talking about plants, which is the new category that we are examining and looking at.

00:11 First is a subcategory of a broader group that we were studying previously.

00:18 So we're looking at protists, but not all protists, because we have different clades and different protists engage in different metabolic activities.

00:27 We were looking at the photosynthetic of protists, right? the photosynthetic ones.

00:35 Because they're very similar because what they have in common is we know plants undergo photosynthesis.

00:43 So they both have photosynthesis, right? and protists and plants are both considered eukaryotic, right? so although different kingdoms, right, different kingdoms, the plantae kingdom, the fungal kingdom, the animal kingdom, we have the domains, eukaryotic kingdom, or a domain, sorry.

01:10 So both of your periodic.

01:11 And eukaryotic, of course, means multicellular.

01:18 And then we have also, well, many times it's multicellular with cellular, with membrane -bound organelles, right? so with membrane -bound organelles, that's the key here.

01:33 And one of these organelles that is responsible for photosynthesis, which both these organisms produce is going to be chloroplasts, right? photosynthetic organelle where we see chlorophyll, those are different pigments that both plants and protists have, these photosynthetic protists.

01:54 So these are a lot of things that are similar or that they share.

01:57 So let's look through the different interruptions and see if any of these meets the ones that are the same, because then we can cancel them out.

02:02 So interruption a is they are photosynthetic.

02:05 And we're looking for how are they different? so they're both photosynthetic.

02:09 So this doesn't explain how they differ.

02:12 Now, a good answer.

02:14 That's our option b.

02:15 Our multicellular, and we just talked about that oftentimes, you know, protists, especially the photosynthetic ones, are multicellular...

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