Fish physiology. Fish genetics

Lesson 1

Unit 2. Fish

1. Read the words.

clownfish

halibut

tremendous

caudal peduncle

photophores

2. Remember the words and word combinations:

two-chambered heart – двухкамерное сердце

operculum/ gill cover - жаберная крышка

secretory cell - секреторная клетка

mucous - слизистый

swim bladder - плавательный пузырь

scales - чешуя

fin – плавник

lip - губа

gill – жабры

angling – ужение

deity – божество

3. a) Cover the right column and read the English words. Translate them into Russian and check your translation.

b) Cover the left column and translate the Russian words back into English.

barracuda lingcod cod sardine anchovy tuna anemonefish gulper anglerfishes     char gudgeon

барракуда, морская щука зубатый терпуг треска сардина анчоус, хамса тунец рыба-клоун, амфиприон мешкорот 1) удильщиковые, морские черти (Lophiidae) 2) брахионихтовые (Brachionichthyidae) 3) хаунаксовые (Chaunacidae) ручьевая форель, пеструшка пескарь

4. Read the words and put down their Russian equivalents:

cold-blooded _____________________________________

paired fins _______________________________________

unpaired fins ______________________________________

angling and fishkeeping ______________________________

5. Put down the English for:

позвоночное животное _________________________________

пользоваться __________________________________________

извлечение кислорода ____________________________________

крупный рогатый скот ___________________________________

жизненная важность _____________________________________

6. Combine the given adjectives (A) with the proper nouns (B).

A	B
aquatic biological religious paired public	fins vertebrates aquaria functions symbols

7. Translate the following words and word combinations in writing.

mountain streams _____________________________________

the deepest depths of the ocean ___________________________

public aquaria _________________________________________

religious symbols _______________________________________

popular movies _________________________________________

bottom fish _____________________________________________

8. Translate the following questions.

1. What does fish anatomy include?

2. How do fish breathe?

3. What propel and stabilize the fish in the water?

4. What are the main groups of fish?

5. Why are fish of tremendous importance for people?

6. What is the role of fish in our life?

9. Read the text. Find the answers to the questions given above.

Fish have evolved very different biological functions from other large organisms. Fish anatomy includes a two-chambered heart, operculum, secretory cells that produce mucous, swim bladder, scales, fins, lips and eyes. Fish breathe by extracting oxygen from water through their gills. Fins propel and stabilize the fish in the water.

Well known fish include: sardines, anchovy, tuna, clownfish (also known as anemonefish), and bottom fish which include halibut and ling cod. Predators include sharks and barracuda.

Fish are aquatic vertebrates that are typically cold-blooded, covered with scales, and equipped with two sets of paired fins and several unpaired fins. Fish are abundant in the sea and in fresh water, with species being known from mountain streams (e.g., char and gudgeon) as well as in the deepest depths of the ocean (e.g., gulpers and anglerfish). They are of tremendous importance as food for people around the world, either collected from the wild or farmed in much the same way as cattle or chickens. Fish are also exploited for recreation, through angling and fishkeeping, and fish are commonly exhibited in public aquaria. Fish have an important role in many cultures through the ages, ranging as widely as deities and religious symbols to subjects of books and popular movies.

Дата добавления: 2014-12-26