Question

$\huge\mathfrak\red{Question ⤵}$
What are dinoflagellates ?​

Answer 1

Answer:

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• Dinoflagellates are unicellular protists comprising two flagella. Dinoflagellates are mostly marine plankton, but also found in freshwater habitats. Photosynthetic dinoflagellates form one of the largest group of eukaryotic algae apart from diatoms.

• Dinoflagellates have characteristics of both plants and animals. There are more than 4500 species of dinoflagellates. Some are photosynthetic autotrophs and some species are heterotrophs, which get their nutrients by phagocytosis. They can be parasitic and endosymbiont to red algae.

• Dinoflagellates were classified under kingdom Protista and phylum Dinoflagellata. Some scientists have kept dinoflagellates in the division Pyrrophycophyta (meaning- fire plants).

• Dinoflagellates are kept in the supergroup Chromalveolata, they seem to have originated from the secondary symbiosis of red algae. The group Alveolata is characterised by the presence of similar ribosomal DNA sequence and alveoli, which is a flattened vesicle present inside the plasma membrane.

Answer 2

Answer:

12500 Joules is the required energy.

Given:-

Time taken ,t = 10 h

Number of Devices ,n = 5

Power of each device ,P = 250 W

To Find:-

Energy Consumed by Devices,E

Solution:-

As we have to calculate the Energy Consumed by devices in 10 hours .

Energy is defined as the Product of Power and Time.

• E = P× n × t

Where,

P denote Power of device

n denote number of devices

t denote time

Substitute the value we get

→ E = 250×5 × 10

→ E = 1250 × 10

→ E = 12500 J or 12500 Wh = 12.5 kWh

Hence , the energy consumed by the devices is 12500 Joules .