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Biology

General

Easy

Question

Which was first photosynthetic organism?

Green algae
Red algae
Cyanobacteria
None of these

The correct answer is: Cyanobacteria

Cyanobacteria (blue-green algae) were first photosynthetic organisms. They contain photosynthetic lamellae equivalent to thylakoids hence, these are autotrophic.

Related Questions to study

Phylogenetic system of classification was given by

Phylogenetic system of classification was given by

Bryophytes are also called ‘amphibians of the plant kingdom’ because

Bryophytes are also called ‘amphibians of the plant kingdom’ because

Chlorenchyma is known to develop in the

Chlorenchyma is known to develop in the

parallel

Pollen sac in $C y c a s$ is called

Pollen sac in $C y c a s$ is called

$F u n a r i a$ , $P o l y t r i c h u m$ and $S p h a g n u m$ are the examples of

$F u n a r i a$ , $P o l y t r i c h u m$ and $S p h a g n u m$ are the examples of

Gymnosperms lack fruits, why?

Gymnosperms lack fruits, why?

parallel

Smallest flowering plant is

Smallest flowering plant is

Which of the following options correctly identifies the plants their groups from the following structure?

Which of the following options correctly identifies the plants their groups from the following structure?
BiologyGeneral

Which of the following taxa shows zooidogamousoogamy?
I) $S p i r o g y r a$ II) $F u n a r i a$
III) $P t e r i s$ IV) $C y c a s$

Which of the following taxa shows zooidogamousoogamy?
I) $S p i r o g y r a$ II) $F u n a r i a$
III) $P t e r i s$ IV) $C y c a s$

parallel

Which of the following gymnosperms is a bushy trailing shrub?

Which of the following gymnosperms is a bushy trailing shrub?

Transfer of pollen grain from anther to the stigma of ovary is called

Transfer of pollen grain from anther to the stigma of ovary is called

Go through the following figures and identify these plants ( $A comma blank B comma blank C$ and $left parenthesis D right parenthesis$

Go through the following figures and identify these plants ( $A comma blank B comma blank C$ and $left parenthesis D right parenthesis$
BiologyGeneral

parallel

Which of the following statement is correct about the gametophytic stage in the alteration of generation with in the life cycle?

Which of the following statement is correct about the gametophytic stage in the alteration of generation with in the life cycle?

Diatoms belong to which class?

Diatoms belong to which class?

In $F u n a r i a comma$ the stomata are found on

In $F u n a r i a comma$ the stomata are found on

parallel

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