Question

Given figures labelled by A & B represent.

	A	B
$\left(1\right)$	Isogametes of Spirogyra	Heterogametes of Fucus
$\left(2\right)$	Isogametes of Cladophora	Heterogametes of Pinus
$\left(3\right)$	Isogametes of Rhizopus	Heterogametes of angiosperms
$\left(4\right)$	Isogametes of Chara	Heterogametes of Synchytrium

Answer 1

• The first picture represents isogametes of Spirogyra which are both flagellated and similar in size.
  
• The second picture represents the oogamous gametes of Fucus, where the large non-motile female fuses with motile male gamete.
  

So, the correct option is '(1)'.