Question

1.Билатеральная (двусторонняя) симметрия тела характерна для: 1) Виноградной улитки. 2) Луковой нематоды(круглый черь) 3)Большого прудовика. 4)Всех перечисленных 2.Среди моллюсков одну ногу имеют 1)только брюхоногие. 2)Только двустворчатые. 3)брюхоногие и двустворчатые.4) только головоногие 3.Среди моллюсков 8-10 ног имеют: 1)Брюхоногие. 2)Двустворчатые. 3)Головоногие 4)Все виды 4.К брюхоногим относятся 1)Осьминоги и каракатицы 2)слизни и прудовики. 3)Виноградная улитка и кальмар 4) Беззубка и мидия 5.К двустворчатым относятся 1)Беззубку и жемчужницу. 2)Беззубку и слизня. 3)Мидия и кальмара 4)Осьминога и наутилуса 6.К головоногим моллюскам относят 1)Осьминога и кальмара 2)Осьминога и устрицу 3)Кальмара и Мидию 4)Каракатицу и виноградную улитку

Answer 1

Ответ:

1.4

2.4

3.4

4.4

5.2

6.4

Объяснение:

дай лучший ответ

Answer 2

Bilateral Symmetry in Different Organisms

Bilateral symmetry refers to the arrangement of body parts in such a way that the body can be divided into two equal halves along a single plane. Let's examine the given options to determine which organisms exhibit bilateral symmetry:

1. Vineyard Snail (Vineyard Snail): The vineyard snail exhibits bilateral symmetry [[1]]. 2. Onion Nematode (Roundworm): The onion nematode, also known as the roundworm, exhibits bilateral symmetry [[2]]. 3. Great Pond Snail (Great Pond Snail): The great pond snail exhibits bilateral symmetry [[3]].

Therefore, the organisms that exhibit bilateral symmetry among the given options are the Vineyard Snail, Onion Nematode, and Great Pond Snail.

Number of Legs in Mollusks

Let's determine the number of legs in different groups of mollusks:

1. Only Gastropods (Snails): Gastropods, which include snails, typically have a single muscular foot used for locomotion [[4]]. 2. Only Bivalves (Clams): Bivalves, such as clams, have two shells and do not possess legs. They use their muscular foot for burrowing and anchoring themselves [[5]]. 3. Both Gastropods and Bivalves: Both gastropods (snails) and bivalves (clams) are groups of mollusks that have different adaptations for locomotion. Gastropods have a single foot, while bivalves use their foot for burrowing and anchoring.

Therefore, the correct answer is that both gastropods and bivalves have adaptations for locomotion, but their specific structures differ.

Number of Legs in Mollusks (8-10 Legs)

Let's determine which group of mollusks has 8-10 legs:

1. Gastropods (Snails): Gastropods, including snails, typically have a single muscular foot used for locomotion and do not possess 8-10 legs [[4]]. 2. Bivalves (Clams): Bivalves, such as clams, do not possess legs and therefore do not have 8-10 legs [[5]]. 3. Cephalopods (Squids, Octopuses): Cephalopods, including squids and octopuses, are a group of mollusks that have tentacles or arms instead of legs. They typically have 8 or more tentacles or arms, but not specifically 8-10 legs [[6]].

Therefore, none of the given options among mollusks have 8-10 legs.

Classification of Mollusks

Let's classify the given mollusks into different groups:

1. Octopuses and Cuttlefish: Octopuses and cuttlefish belong to the group of cephalopods, which are characterized by having a distinct head and a set of arms or tentacles used for locomotion and capturing prey [[7]]. 2. Slugs and Snails: Slugs and snails belong to the group of gastropods, which are characterized by having a single muscular foot used for locomotion and a coiled shell in some species [[8]]. 3. Vineyard Snail and Squid: The vineyard snail belongs to the group of gastropods, while the squid belongs to the group of cephalopods [[1]] [[9]]. 4. Razor Clam and Mussel: The razor clam and mussel belong to the group of bivalves, which are characterized by having two shells and a muscular foot used for burrowing and anchoring [[10]].

Therefore, the correct classification of the given mollusks is as follows: - Octopuses and Cuttlefish: Cephalopods - Slugs and Snails: Gastropods - Vineyard Snail and Squid: Gastropod and Cephalopod, respectively - Razor Clam and Mussel: Bivalves

I hope this helps! Let me know if you have any further questions.