Match each of the following marine organisms with their identifying characterist
ID: 294966 • Letter: M
Question
Match each of the following marine organisms with their identifying characteristics. Two of them are wrong.
baleen whales large filter feeders
echinoderms spiny skin
red algae microalgae that can cause red tide toxic bloom
dinoflagellates complex life cycles with multiple stage
diatoms have silica (glass) shells
crabs and lobsters decopods (have 10 legs)
manatee herbivorous marine mammal
mangrove intertidal zone tree
sponges structurally simple animal that filters water
anemones and medusae have stinging cells on their tentacles
snails and sea slugs have a muscular foot, eat with radula
mussel and clam mollusks with 2 shells
hermit crab crustacean that lives in a snail shell
hagfish and lampreys jawless fish
sharks skeleton of cartilage, not bone
tuna, salmon or anchovy bony fish with ray fins
leatherback sea turtle marine reptile returns to land to lay eggs
Explanation / Answer
Match each of the following marine organisms with their identifying characteristics. Two of them are wrong.?
Answer:
S. No.
Marine Organism
Characteristics
Remarks
1
Baleen Whales
large filter feeders
True
2
echinoderms
spiny skin
True
3
red algae
microalgae that can cause red tide toxic bloom
False*
4
dinoflagellates
complex life cycles with multiple stage
False*
5
diatoms
have silica (glass) shells
True
6
crabs and lobsters
decopods (have 10 legs)
True
7
manatee
herbivorous marine mammal
True
8
mangrove
intertidal zone tree
True
9
sponges
structurally simple animal that filters water
True
10
anemones and medusae
have stinging cells on their tentacles
True
11
snails and sea slugs
have a muscular foot, eat with radula
True
12
mussel and clam
mollusks with 2 shells
True
13
hermit crab
crustacean that lives in a snail shell
True
14
hagfish and lampreys
jawless fish
True
15
sharks
skeleton of cartilage, not bone
True
16
tuna, salmon or anchovy
bony fish with ray fins
True
17
leatherback sea turtle
marine reptile returns to land to lay eggs
True
All are true except 3 and 4.
Explanation of 3:
Red tide Toxic blooms are caused by dinoflagellates not Red Algae.
The dinoflagellates are a large group of flagellate eukaryotes that constitute the phylum Dinoflagellata. Certain species of phytoplankton and dinoflagellates found in the red tide contain photosynthetic pigments that vary in color from brown to red.
Explanation of 4:
Red Algae have complex life cycles with multiple stages.
Red algae lack motile sperm. Hence, they rely on water currents to transport their gametes to the female organs – although their sperm are capable of "gliding" to a carpogonium's trichogyne.
They display alternation of generations. Alternation of generations (also known as metagenesis) is the type of life cycle that occurs in those plants and algae in the Archaeplastida and the Heterokontophyta that have distinct sexual haploid and asexual diploid stages. In these groups, a multicellular gametophyte, which is haploid with n chromosomes, alternates with a multicellular sporophyte, which is diploid with 2n chromosomes, made up of n pairs. A mature sporophyte produces spores by meiosis, a process which reduces the number of chromosomes to half, from 2n to n.
S. No.
Marine Organism
Characteristics
Remarks
1
Baleen Whales
large filter feeders
True
2
echinoderms
spiny skin
True
3
red algae
microalgae that can cause red tide toxic bloom
False*
4
dinoflagellates
complex life cycles with multiple stage
False*
5
diatoms
have silica (glass) shells
True
6
crabs and lobsters
decopods (have 10 legs)
True
7
manatee
herbivorous marine mammal
True
8
mangrove
intertidal zone tree
True
9
sponges
structurally simple animal that filters water
True
10
anemones and medusae
have stinging cells on their tentacles
True
11
snails and sea slugs
have a muscular foot, eat with radula
True
12
mussel and clam
mollusks with 2 shells
True
13
hermit crab
crustacean that lives in a snail shell
True
14
hagfish and lampreys
jawless fish
True
15
sharks
skeleton of cartilage, not bone
True
16
tuna, salmon or anchovy
bony fish with ray fins
True
17
leatherback sea turtle
marine reptile returns to land to lay eggs
True