"Go forth and multiply." But how?

 Dr Abe V Rotor

1. Clue: egg mass of a kind of insect.

2. Clue: Pods of the biggest legume in the world

3. Clue: Shellfish in the wild

4. Clue: Mosaic virus of a plant family that can remain 
dormant for as long as 20 years.

5. Clue: Nitrogen-fixing nodules.

6. Clue: immature stage of housefly 

7. Clue: popularly referred to as plant lice living at the axils and
underside of leaves, 

8. Clue: saprophyte, lives on dead wood

9. Clue: pods of wild orchid

10. Clue: flower emerges separately from vegetative phase, emits foul odor to
attract flies to pollinate, scientifically Amorphophallus campanulatus.

Answers:
1. Egg mass of preying mantis, 2. seeds of acacia (dicot), 3. eggs of oyster, 4. mosaic virus of tobacco, Family Solanaceae, 5. Rhizobium bacteria of legumes  6. maggots hatched from eggs of housefly, 7. young of aphids (Aphis maydis or A. gossypii),  8. Ganoderma shelf mushroom by spores 9. seeds of a wild orchid, 10. seeds of pongapong (Amorphophallus campanulatus)