HORTICULTURE

HORTICULTURE SCIENCE

ENTOMOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Nymphs during most of life cycle; after several years, emerge from water as adults, quickly mate and die (few hours or days)
A
Odonata-Dragonflies and Damselflies
B
Ephemeroptera (Mayflies)
C
Plecoptera-Stoneflies
D
Megaloptera/Neuroptera:Alderflies and Dobsonflies
Explanation: 

Detailed explanation-1: -Mayfly nymphs emerge shortly after the eggs have been laid. The new hatchlings are less than 1 mm long and have no gills, bearing little resemblance to the adults they will become. Throughout their development, the mayfly nymphs can grow up to 3 cm long, passing through many stages of development (called instars).

Detailed explanation-2: -Mayflies spend most of their lives in the water as nymphs and then emerge as adults for only a short while. Adults will live only a day or so, but the aquatic larvae lives for about a year.

Detailed explanation-3: -Mayflies are the only insects known to have two adult molts. They get their name from their typical emergence during the month of May. But they can come out earlier or later depending on the species and environmental factors.

Detailed explanation-4: -Mayfly lays her eggs in water which settles down at the bottom. Usually, the mayfly eggs hatch in about 2 weeks but in unfavourable conditions, they undergo a time of zero growth. This halt in the egg stage is known as diapause.

There is 1 question to complete.