DESCRIPTIVE TEXT: SPERM WHALE

Scientific classification
—Kingdom : Animalia
—Phylum : Chordata
—Order : Artiodactyla
—Family : Physeteridae
—Genus : Physeter
—Species : Physeter macrocephalus

Biology

 1. External appearance
—The sperm whale is the largest toothed whale, with adult males measuring up to 20.5 meters long and weighing up to 57,000 kilograms.
Average Sizes
Length
weight
Male
16 meters
41.000 kilograms
Female
11 meters
14.000 kilograms
Newborn
4 meters
1.000 kilograms
2. Skeleton
—The ribs are bound to the spine by flexible cartilage.
—The skull of the sperm whale is asymmetrical so as to aid echolocation.

3. Senses
Spermaceti organ and melon

 Atop the whale's skull is positioned a large complex of organs filled with spermaceti. The purpose of this complex is to generate powerful and focused clicking sounds, which the sperm whale uses for  echolocation and communication.
Below the spermaceti organ lies the "junk”, also known as melon. The structure of the junk redistributes physical stress across the skull and may have evolved to protect the head during ramming.

Question:
1. What is the binominal name of the sperm whale?
a. Physeter macrocephalus
b. Panthera tigris
c. Cetorhinus maximus
d. Rhinoceros sondaicus
e. Carcharodon carcharias

2. What is the average lenght of male sperm whale?
a. 2 meters
b. 7 meters
c. 16 meters
d. 20 meters
e. 11 meters

3. What is the kingdom of sperm whale?
a. Plantae
b. Animalia
c. Fungus
d. Protist
e. Monera

4. What is the average weight of a newborn sperm whale?
a. 3000 kg
b. 2500 kg
c. 2000 kg
d. 1500 kg
e. 1000 kg

5. What is the function of the "complex organ"in the sperm whale's head?
a. To use echolocation
b. To protect the head during ramming
c. Digestive system
d. Respiratory system
e. No function at all

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