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海綿動物中的骨針是支撐海綿動物身體的結構，主要由硅質組成。
糞類圓線蟲絲狀蚴
Four cockroaches in a petri dish on a white background.
Moniliformis dubius is an acanthocephalan (thorny-headed worm) whose cystacanth stage develops inside the American cockroach (Periplaneta americana)
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Moniliformis dubius is an acanthocephalan (thorny-headed worm) whose cystacanth stage develops inside the American cockroach (Periplaneta americana), serving as an intermediate host.
A fluke (trematode) with an elongated, flattened, and unsegmented body, possessing two suckers (one oral sucker at the anterior end and a larger ventral sucker on the underside).
Flatworms and plankton in freshwater, as seen under a microscope.
顯微鏡下黑背景中的果蠅卵
在顯微鏡下觀察到的單細胞藻類，具有一個三叉的星形結構，中心為綠色。
A type of unicellular algae in the phylum Chlorophyta called Closterium has a crescent-shaped form, translucent, and smooth surface. It is found in freshwater and can be observed under a microscope.
培養皿中土壤里的根瘤菌細菌
A culture plate of Bacillus subtilis (B. subtilis) on starch agar to test the bacteria's ability to break down starch.
A light pink baby in a circular cream-colored circle with a dark cream-colored serrated border on a white background - vector
The Common Paper Wasp (Polistes spp.) is building a nest, which has a long structure resembling a small honeycomb arranged in a line.
The Common Paper Wasp (Polistes spp.) is building a nest, which has a long structure resembling a small honeycomb arranged in a line.
close-up view of garlic bulbs.
Mangosteen fruits stacked in large numbers, with a deep purple color, thick rind, and bright green calyx at the tips of the fruit.
A type of unicellular algae in the phylum Chlorophyta called Closterium has a crescent-shaped form, translucent, and smooth surface. It is found in freshwater and can be observed under a microscope.
A type of unicellular algae in the phylum Chlorophyta called Closterium has a crescent-shaped form, translucent, and smooth surface. It is found in freshwater and can be observed under a microscope.
Daphnia, or water fleas, have an overall shape resembling a boat, with a transparent shell covering their body. They live in freshwater, as seen under a microscope.
單細胞藻類在顯微鏡下呈現出具有三個分支的星狀結構，中心為綠色。
A type of unicellular algae in the phylum Chlorophyta called Closterium has a crescent-shaped form, translucent, and smooth surface. It is found in freshwater and can be observed under a microscope.
等滲水（H2O）因滲透壓擴散進入紅細胞，這是動物細胞中的水平衡
低滲水（H2O）因滲透壓擴散進入紅細胞，這是動物細胞中的水平衡現象
高滲水（H2O）因滲透壓擴散進入紅細胞，這是動物細胞中的水平衡
The prop roots of the mangrove trees spread out in a dense network over the mudflats and shallow water. The dark brown roots contrast with the color of the soil and the sunlight that shines down, spar
The prop roots of the mangrove trees spread out in a dense network over the mudflats and shallow water. The dark brown roots contrast with the color of the soil and the sunlight that shines down, spar
Plastic debris from the beach on your fingertips
The intricate details of a grain of sand become visible when magnified 10X under a microscope.
A graphic featuring a blood drop, a test tube, and blood groups A, B, AB, O on a white background, illustrating the importance of blood testing and typing.
顯微鏡下的單子葉植物葉子

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